CROSS REFERENCE TO RELATED APPLICATIONS

[001] This application claims priority under 35 U.S.C. § 1 19(e) to U.S. Provisional Patent Application Serial No. 63/363,208, filed 19 Apr 2022, entitled “REPLENISHMENT OF SEMIVOLATILE CARRIERS IN COSMETICS FROM PACKAGES WITH RESERVOIRS”, the contents of which are incorporated herein by reference in their entirety.

FIELD OF THE INVENTION

[002] The disclosure is related to the field of cosmetics and packages for cosmetics, in particular cosmetics containing semi-volatile carriers such as isododecane.

BACKGROUND OF THE INVENTION

[003] Use of film- forming agents for obtaining long-lasting make-up and body care formulations is widespread, due to their ability to produce a continuous film on a substrate with very good adhesion and flexibility properties. The most commonly used film-forming agents for cosmetic applications are those based on silicone and acrylate, but there are also many others of synthetic origin and, increasingly, of natural origin. Film formers are in most cases used with at least one volatile oil / solvent. Among them, the most common are semi- volatile silicones such as cyclomethicone and short-chain alkanes such as isododecane.

[004] Isododecane is a branched chain aliphatic hydrocarbon, used as emollient and solvent in personal care and common beauty products, including decorative cosmetics, make-up, facial care, facial cleansing, skin care, body care, and baby care. It is colorless and water-insoluble. It acts as a moisture-locking barrier for the skin, keeping it hydrated and smooth. In addition to this (and while not a skincare benefit), isododecane contributes to the cream-like or soft texture of many formulas so that they can easily (and evenly) glide silicones and pigments onto the skin.

[005] Isododecane can be found in a majority of beauty products, including but not limited to moisturizer, creams, concealer, foundation, mascara, eyeliner, eyeshadow, skin serums, shampoo, conditioners, lip-gloss, lipstick, hair serums, hair spray. These products can be in solid, lotion, cream, and gel forms, and isododecane can constitute up to 20% of their total weight.

[006] Although compounds such as isododecane have lower vapor pressure than low molecular weight compounds such as hexane, they are not completely nonvolatile. Over time, these compounds can evaporate from cosmetic formulations. For certain formulations, loss of even a small fraction of the organic compound can lead to undesired changes in the physical properties of the formulation.

[007] The quality, appearance, ease of application and long-lasting performance (crystallization phenomena of the formulation) of cosmetic formulations containing a carrier such as isododecane can be degraded with the evaporation of this carrier.

[008] There remains a need to minimize the loss of carrier from cosmetic formulations, in order to maintain the desired physical properties and thus extend shelf life and to appeal to the consumer.

SUMMARY OF THE INVENTION

[009] Provided herein is a package including: a cosmetic which includes a semi-volatile carrier; a container enclosing the cosmetic; a removable or openable lid; a headspace surrounding the cosmetic defined by the container and/or the lid; a reservoir capable of containing the semi-volatile carrier; and a pathway for transmission of vapor between the reservoir and the headspace.

[010] Also provided herein is a method for minimizing evaporation from a cosmetic comprising a semi- volatile carrier, the method comprising the step of enclosing the cosmetic in a package, wherein the package includes: a cosmetic which includes a semi-volatile carrier; a container enclosing the cosmetic; a removable or openable lid; a headspace surrounding the cosmetic defined by the container and/or the lid; a reservoir capable of containing the semi-volatile carrier; and a pathway for transmission of vapor between the reservoir and the headspace. BRIEF DESCRIPTION OF THE DRAWINGS

[011] The foregoing summary, as well as the following detailed description of the presently disclosed technology, will be better understood when read in conjunction with the appended drawings, wherein like numerals designate like elements throughout. For the purpose of illustrating the presently disclosed technology, there are shown in the drawings various illustrative embodiments. It should be understood, however, that the presently disclosed technology is not limited to the precise arrangements and instrumentalities shown. In the drawings:

[012] FIG. 1(a) depicts an embodiment of a package for lipstick with lipstick withdrawn and lid attached. FIG. 1(b) shows the package of FIG. 1(a) with lid removed and lipstick extended. 5 = cosmetic (lipstick); 10 = container; 15 = reservoir; 20 = partition; 25 = lid; 30 = headspace; 35 = optional cylindrical sheath; 40 = optional barrier.

[013] FIG. 2(a) depicts an embodiment of a package for lipstick in its closed state as originally manufactured. FIG. 2(b) shows the package of FIG. 2(a) with the lid removed. FIG. 2(c) shows the package of FIG. 2(a) with the lid reattached. 10 = container; 15 = reservoir; 20 = partition; 25 = lid; 30 = headspace; 35 = optional cylindrical sheath; 40 = optional barrier.

[014] FIG. 3(a) depicts an embodiment of a package for lipstick in its closed state. FIG. 3(b) shows the container of the package of Fig. 3(a) with the lid removed. Fig. 3(c) shows the lid, removed from container of the package of Fig. 3(a). 5 = cosmetic (lipstick); 10 = container;

15 = reservoir; 20 = partition; 25 = lid; 30 = headspace; 35 = optional cylindrical sheath; 40 = optional barrier.

[015] FIG. 4(a) depicts an isometric view of an embodiment of a disassembled package that includes a container and a lid for storing a semi-solid material. FIG. 4(b) is a sectional view of the package of FIG. 4(a) in its closed state. FIG. 4(c) is an exploded sectional view of the package of FIG. 4(a). 5 = cosmetic (semi-solid); 10 = container; 15 = reservoir; 20 = partition;

25 = lid; 30 = headspace; 40 = optional barrier.

[016] FIG. 5(a) depicts a perspective view of an embodiment of a package comprising a squeezable container and flip-top lid attached thereto. FIG. 5(b) depicts a perspective view of an alternative package embodiment comprising a somewhat different container from that of FIG.

5(a) and a flip-top lid similar to that shown in FIG. 5(a). FIG. 5(c) shows a sectional view of the package of Fig. 5(b). 5 = cosmetic (semi-liquid); 10 = container; 15 = reservoir; 25 = lid; 30 = headspace; 40 = optional barrier; 45 = optional nozzle; 50 = optional flip-top.

[017] FIG. 6(a) depicts a perspective view of an embodiment of a package for a liquid or semi-liquid, the package having an optional nozzle for spraying the liquid or semi-liquid FIG. 6(b) shows a sectional view of the package of FIG. 6(a). 5 = cosmetic (semi-liquid); 10 = container; 15 = reservoir; 20 = partition; 25 = lid; 30 = headspace; 40 = optional barrier; 45 = optional nozzle.

[018] FIG. 7(a) depicts a sectional view of an embodiment of a multi-layer package for a semi-solid. FIG. 7(b) depicts a sectional view of a slightly different embodiment of a multi-layer package for a semi-solid. 5 = cosmetic (semi-solid); 10 = container; 15 = reservoir; 25 = lid; 30 = headspace; 40 = optional barrier.

[019] FIG. 8 shows a representation of FAU-type zeolite structure in contact with isododecane molecules.

[020] FIG. 9 shows a graph representing a Thermogravimetric (TGA) analysis of isododecane (19.25 weight%). Horizontal axis: temperature (°C); trace and left vertical axis: % weight loss; heating rate 10 °C I min.

[021] FIG. 10 shows a graph representing a TGA analysis of CBV 100 impregnated with isododecane; heating rate 10 °C /min. Horizontal axis: temperature (°C); trace (a) and left vertical axis:% TG; trace (b) and right vertical axis: heat flow (vertical= exotherm).

[022] FIG. 11(a) shows a graph representing a TGA analysis of non-impregnated silica gel. FIG. 11(b) shows a graph representing a TGA analysis of isododecane-impregnated silica gel. Horizontal axis: temperature (°C); trace and left vertical axis: % weight loss; heating rate 10 °C / min.

[023] FIG. 12(a) shows a graph representing a TGA analysis of non-impregnated FAU-type zeolite beads. FIG. 12(b) shows a graph representing a TGA analysis of isododecane- impregnated FAU-type zeolite beads. Horizontal axis: temperature (°C); trace (a) and left vertical axis: % weight loss; heating rate 10 °C I min.

[024] FIG. 13 shows a representation of *BEA-type zeolite structure in contact with isododecane molecules.

[025] FIG. 14(a) shows a graph representing a TGA analysis of non-impregnated *BEA- type zeolite. FIG. 14(b) shows a graph representing a TGA analysis of isododecane- impregnated *BEA-type zeolite. Horizontal axis: temperature (°C); trace (a) and left vertical axis: % weight loss; heating rate 10 °C / min.

[026] FIG. 15(a) provides a side elevation view of PEGGY SAGE brand lipstick packaging that may be modified to incorporate aspects of the present disclosure. FIG. 15(b) is a sectional view of the packaging of FIG. 15(a). FIG. 15(c) is a perspective view of the packaging of FIG. 15(a).

[027] FIG. 16 is a side elevation view of the PEGGY SAGE brand lipstick packaging of FIG. 15(a), providing relevant dimensions for the same.

[028] FIG. 17(a) is a perspective view of an optionally 3-D printed porous grid for containing impregnated zeolite beads within a cosmetic container. FIG. 17(b) is a sectional view of the porous grid of FIG. 17(a) along a plane intersecting slots in the outer wall of the grid.

FIG. 17(c) is a sectional view of the porous grid along a plane perpendicular to the section plane of FIG. 17(b).

[029] FIG. 18(a) depicts a side elevation view of a modified PEGGY SAGE brand lipstick packaging that incorporates aspects of the present disclosure. FIG. 18(b) is a sectional view of the packaging of FIG. 18(a) along section line A — A. FIG. 18(c) is a front perspective view of the packaging of FIG. 18(a), showing zeolite beads. FIG. 18(d) is a top perspective view of the packaging of FIG. 18(a), also showing zeolite beads.

[030] FIG. 19 is a graph that shows the variation in mass (vertical scale, mg) over time (horizontal scale, days) for a test procedure on modified PEGGY SAGE brand lipstick packaging at 22 °C and 80% RH. Plots (a) and (b) are results of the packaging without zeolite beads while plots (c) and (d) are results of packaging with zeolite beads.

[031] FIG. 20 is a graph that shows the variation in mass (vertical scale, mg) over time (horizontal scale, days) for the test procedure on modified PEGGY SAGE brand lipstick packaging at 40 °C and 75% RH. Plots (a) and (b) are results of the packaging without zeolite beads while plots (c) and (d) are results of packaging with zeolite beads.

[032] FIG. 21 is a photograph showing the modified PEGGY SAGE brand lipstick mounted in a 3D-printed PLA holder for measurement of the change in dimensions as a result of the evaporation experiments.

[033] FIG. 22 is a photograph showing the apparatus for measuring changes in rigidity of the lipsticks as a result of an evaporation experiment. [034] FTG. 23(a) is a photograph showing the appearance of the PEGGY SAGE brand lipsticks in a modified container utilizing 13X zeolite beads after the evaporation experiment. FIG. 23(b) is a photograph showing the appearance of a control PEGGY SAGE brand container without zeolite beads.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[035] While systems, devices and methods are described herein by way of examples and embodiments, those skilled in the art recognize that the systems, devices and methods of the presently disclosed technology are not limited to the embodiments or drawings described. Rather, the presently disclosed technology covers all modifications, equivalents and alternatives falling within the spirit and scope of the appended claims. Any headings used herein are for organizational purposes only and are not meant to limit the scope of the description or the claims.

[036] Disclosed herein are packages that can mitigate the loss of a carrier from a cosmetic formulation, which would otherwise cause undesired changes in the physical properties of the formulation. Due to the non-zero volatility of the carrier, a reservoir capable of containing the carrier that is connected to the headspace surrounding the cosmetic can replenish, via the vapor phase, carrier that has been lost from the cosmetic via evaporation.

[037] In certain embodiments, transmission of vapors between the reservoir and the headspace can be altered from structural features of the packaging. Towards this goal, a partition can be placed between the reservoir and the headspace. Permeability of the partition to gas, or more particularly to the vapor phase of the carrier, can be changed from removal/ opening and re-attachment / re-closing of the lid to the package.

[038] For example, during longer-term storage, a cosmetic in a sealed package may not be susceptible to loss of the carrier; however, loss may be induced by initial removal or opening of the lid and exposure to atmosphere. For such purposes, it may be desirable to initially seal the reservoir not only from atmosphere but also from the cosmetic, since replenishment of the carrier would not be required until the first removal or opening of the lid exposes the cosmetic to atmosphere. The package can incorporate a partition between the reservoir and the headspace which is altered, or optionally broken, upon first removal or opening of the lid from the package. From this point onward, i.e., after first removal or opening of the lid, the reservoir will be in gaseous communication with the cosmetic, and any loss of carrier can he restored from vaporous hydrocarbon in the container headspace.

[039] In certain embodiments, alteration of the permeability of the partition to carrier can be reversibly changed upon removal / opening and re-attachment/ or re-closing of the lid. For example, an initially permeable partition can be made impermeable to gaseous communication upon removal or opening of the lid, thereby avoiding leakage of the carrier from the reservoir into the atmosphere. Upon re-attachment or re-closing of the lid, the impermeable partition is then made permeable, so as to replenish the cosmetic while the package is closed to atmosphere. [040] In certain embodiments, the reservoir can consist of the carrier itself. For certain carriers, particularly those which are solid at ambient temperature, this design can be feasible. However, for carriers which exist as a liquid at ambient temperature, this design choice may be problematic, due to fluid motion of the liquid within the package.

[041] In certain embodiments, the reservoir can comprise a solid reservoir material in which the carrier can be impregnated. Fluid motion of the carrier within the package can thus be minimized or completely circumvented.

[042] The solid reservoir material can be impregnated with the carrier either before or during manufacture of the package. The solid reservoir material may be incorporated into the package as a monolithic material. Alternatively, the solid reservoir material may be incorporated into the package as a granular or particulate material. A barrier may be provided to prevent dispersion of the solid reservoir material throughout the package, while still allowing free passage of gas between the solid reservoir material and the cosmetic. The barrier is preferentially located between the solid reservoir material and the cosmetic. In the case of granular or particulate solid reservoir material, a grid or mesh may optionally be incorporated as the barrier. Optionally, the barrier may contain pores or openings, preferably smaller in size than granular or particulate reservoir material, thereby preventing obstruction of the pores or openings by granules or particles of the reservoir material and / or preventing passage of the granular or particulate reservoir material across the partition.

[043] In certain embodiments, the solid reservoir material can be a zeolite. Certain types of zeolites can absorb liquids, including hydrocarbons. These zeolites are well suited to serve as the hydrocarbon reservoir. [044] In certain embodiments, the solid reservoir material is a gel. Tn certain embodiments, the solid reservoir material is a porous material. In certain embodiments, the solid reservoir material is a silica gel. In certain embodiments, the solid reservoir material is a porous alumina material.

[045] Accordingly, provided herein is a package, comprising: a cosmetic which comprises a semi-volatile carrier; a container enclosing the cosmetic; a removable or openable lid; a headspace surrounding the cosmetic defined by the container and I or the lid; a reservoir capable of containing the semi-volatile carrier; and a pathway for transmission of vapor between the reservoir and the headspace.

[046] Also provided herein is a method for minimizing evaporation from a cosmetic comprising a semi- volatile carrier, the method comprising the step of enclosing the cosmetic in a package, wherein the package comprises: a cosmetic which comprises a semi-volatile carrier; a container enclosing the cosmetic; a removable or openable lid; a headspace surrounding the cosmetic defined by the container and I or the lid; a reservoir capable of containing the semi-volatile carrier; and a pathway for transmission of vapor between the reservoir and the headspace.

[047] In certain embodiments, the lid to the package is removable. In certain embodiments, the lid to the package is openable.

[048] In certain embodiments, the reservoir contains a solid reservoir material capable of absorbing the semi- volatile carrier. In certain embodiments, the solid reservoir material is a monolithic solid. In certain embodiments, the solid reservoir material is in the form of beads, grains, or particles.

[049] In certain embodiments, the package further comprises a barrier to prevent dispersion of the solid reservoir material throughout the package. In certain embodiments, the barrier is located between the solid reservoir material and the cosmetic. In certain embodiments, the barrier is chosen from a grid, a mesh, and a porous plate. In certain embodiments, the barrier comprises pores or openings. In certain embodiments, the particle size of the solid reservoir material is substantially larger than the size of the pores or openings in the barrier.

[050] In certain embodiments, the package further comprises a partition, with variable permeability to vapor, between the reservoir and the headspace. In certain embodiments, the partition is initially impermeable to the semi-volatile carrier. In certain embodiments, the package is configured so that removal or opening alters permeability of the partition to vapor. In certain embodiments, variation of the permeability of the partition to vapor is accomplished by variation in the obstruction of the pathway for transmission of vapor between the reservoir and the headspace by the partition. In certain embodiments, reduction of the permeability of the partition to vapor is accomplished by an increase in the obstruction of the pathway for transmission of vapor between the reservoir and the headspace by the partition. In certain embodiments, the partition can be made fully impermeable to vapor. In certain embodiments, the partition can be made fully impermeable to vapor by reconfiguring so as to completely obstruct the pathway for transmission of vapor between the reservoir and the headspace.

[051] In certain embodiments, the permeability of the partition to the semi- volatile carrier is altered upon first removal or opening of the lid by the consumer. In certain embodiments, the permeability of the partition to the semi-volatile carrier is altered upon first and subsequent removals / openings of the lid by the consumer. In certain embodiments, the permeability of the partition to the semi- volatile carrier is altered upon first and subsequent re- attachments or reclosings of the lid by the consumer.

[052] In certain embodiments, the permeability of the partition to the semi-volatile carrier is increased upon first removal or opening of the lid by the consumer. In certain embodiments, first removal or opening of the lid by the consumer acts to open passages in the partition, thereby increasing transmission of vapors between the headspace and the reservoir. In certain embodiments, first removal or opening of the lid by the consumer at least partially breaks the partition, thereby increasing transmission of vapors between the headspace and the reservoir.

[053] In certain embodiments, the permeability of the partition to the semi- volatile carrier is decreased upon first and subsequent removals / openings of the lid by the consumer. In certain embodiments, first and subsequent removals / openings of the lid by the consumer acts to close passages in the partition, thereby decreasing transmission of vapors between the headspace and the reservoir.

[054] In certain embodiments, the permeability of the partition to the semi-volatile carrier is increased upon first and subsequent re-attachments or re-closings of the lid by the consumer. In certain embodiments, first and subsequent re-attachments or re-closings of the lid by the consumer acts to open passages in the partition, thereby increasing transmission of vapors between the headspace and the reservoir.

[055] In certain embodiments, the solid reservoir material is impregnated with the semivolatile carrier. In certain embodiments, the solid reservoir material is a zeolite. In certain embodiments, the solid reservoir material is a faujasite zeolite. In certain embodiments, the solid reservoir material is an X faujasite zeolite. In certain embodiments, the solid reservoir material is an Y faujasite zeolite.

[056] In certain embodiments, the semi-volatile carrier is a Cs-Ci4 hydrocarbon. In certain embodiments, the semi- volatile carrier is a linear or branched Cs-C u hydrocarbon. In certain embodiments, the semi-volatile carrier is a C12 hydrocarbon. In certain embodiments, the the semi- volatile carrier is branched a C12 hydrocarbon. In certain embodiments, the semi- volatile carrier is isododecane.

[057] In certain embodiments, the semi-volatile carrier is a siloxane. In certain embodiments, the semi-volatile carrier is a cyclomethicone.

[058] In certain embodiments, the cosmetic is chosen from lipstick, lip balm, foundation, and skin cream. In certain embodiments, the cosmetic is chosen from lipstick and lip balm. In certain embodiments, the cosmetic is lipstick.

[059] In certain embodiments, one or more design features of the package will prompt the consumer to store the package upright. In certain embodiments, one or more design features of the package will prompt the consumer to maintain the package upright during application. In certain embodiments, the package will comprise an angular or rounded surface at its top, discouraging or preventing the consumer from storing the package with the angular or rounded surface oriented downward.

[060] Also provided are embodiments wherein any embodiment above may be combined with any one or more of these embodiments, provided the combination is not mutually exclusive. Definitions

[061] As used herein, the terms below have the meanings indicated.

[062] The term “carrier”, as used herein, refers to an organic compound that is used as a solvent, binder, or diluent in a formulation. In some embodiments, the formulation is a cosmetic formulation. In some embodiments, the carrier is a hydrocarbon. In some embodiments, the carrier contains oxygen. In some embodiments, the carrier contains silicon. In some embodiments, the carrier contains silicon and oxygen. In some embodiments, the carrier is a silicone. In some embodiments, the carrier contains 16 carbons or fewer. In some embodiments, the carrier contains 14 carbons or fewer. In some embodiments, the carrier contains 12 carbons or fewer. In some embodiments, the carrier has a formula weight of 300 g / mol or less. In some embodiments, the carrier has a formula weight of 250 g / mol or less. In some embodiments, the carrier has a formula weight of 200 g / mol or less. In some embodiments, the carrier has a formula weight of 180 g / mol or less.

[063] In some embodiments, the carrier is a naturally occurring liquid or oil. In some embodiments, the carrier is a naturally occurring liquid or oil derived from a plant. In some embodiments, the carrier is used with minimal processing from its naturally occurring state. [064] In some embodiments, the carrier is chosen for use in a cosmetic. In some embodiments, the carrier substantially nontoxic when topically applied. In some embodiments, the carrier is chosen for its physical properties.

[065] The term “semi- volatile”, as used herein, refers to a substance of intermediate volatility. A semi-volatile substance will generally possess a vapor pressure at ambient temperature, or 25 °C, of 25 Torr or less, optionally 10 Torr or less, optionally 5 Torr or less, optionally 2 Torr or less, optionally 1 Torr or less, optionally 0.5 Torr or less. A semi-volatile substance will generally possess a vapor pressure at ambient temperature, or 25 °C, of 0.01 Torr or more, optionally 0.02 Torr or more, optionally 0.05 Torr or more, optionally 0.1 Torr or more, optionally 0.5 Torr or more, optionally 1 Torr or more, optionally 2 Torr or more.

[066] The term “volatile”, as used herein, refers to a substance of significant volatility. A volatile substance will generally possess a vapor pressure at ambient temperature, or 25 °C, of 50 Torr or more, optionally 100 Torr or more, optionally 200 Torr or more, optionally 400 Torr or more. [067] The term “solid”, as used herein, generally refers to a substance which does not flow, and which retains its shape when subjected to mild or moderate force.

[068] The term “semi-solid”, as used herein, generally refers to a substance which does not flow, which retains its shape when subjected to mild force, and which can undergo deformation when subjected to moderate force.

[069] The term “semi-liquid”, as used herein, generally refers to a substance which will flow, but which has appreciable viscosity. A semi-liquid will generally be more viscous than water, optionally more viscous than heavy cream, optionally more viscous than com syrup.

List of abbreviations

[070] FAU = faujasite; TGA = thermogravimetric analysis; id = inner diameter; od = outer diameter; PLA = poly (lactic acid).

Exemplary Embodiment A: Lipstick

[071] Referring now in detail to the various figures of the drawings, wherein like reference numerals refer to like parts, there is shown in FIGs. 1(a) and 1(b) an optional embodiment of a package, according to an aspect of the disclosed concept. In this embodiment, the cosmetic 5 is lipstick, packaged in a container 10. Positioned within the container 10 is a reservoir 15 containing solid reservoir material, and a selectively openable partition 20, positioned between the reservoir 15 and the cosmetic 5. The solid reservoir material, which may for example be a zeolite or other material with a pore size configured to adsorb molecules of a desired carrier, is impregnated with molecules of the carrier, such as isododecane. For simplicity, reservoir 15 is depicted as being positioned below the cosmetic 5; however, any position within container 10 that is exposed to (in gaseous communication with) a headspace 30 is suitable. Attached to the container is a preferably removable lid 25. The lid, when attached to the container to cover the cosmetic 5, defines a headspace 30 surrounding the cosmetic 5. Also shown is optional barrier 40 above the reservoir, thus separating the reservoir 15 from the remainder of the container 10. The partition 20, when closed, is gas impermeable.

[072] Optional components of the packaging include a sheath 35 for housing and mechanically supporting cosmetic 5. In some embodiments, a mechanism for extending or retracting cosmetic 5 is incorporated in container 10 and sheath 35.

[073] In this exemplary embodiment, as originally provided to the consumer, with lid attached so as to cover the cosmetic 5, partition 20 is open (and is thus represented by drawing partition 20 with a broken line) so as to allow the vapor of carrier to flow between the reservoir 15 and remaining portions of the container 10. In this open state, depicted in FIG. 1(a), reservoir 15 can replenish cosmetic 5 with carrier, via the vapor phase, unimpeded by partition 20.

[074] Depicted in FIG. 1(b) is this exemplary embodiment, with lid removed. Removal or opening of the lid operates to selectively and reversibly close the partition 20 (which is represented by drawing partition 20 with a solid line) so as to retain the carrier within the reservoir 15. Leakage of the carrier to atmosphere is thus prevented, since vapors from reservoir 15 can no longer pass through partition 20.

[075] Upon re-attachment or re-closing of the lid, the partition 20 is again selectively and reversibly opened, thus again allowing the carrier in vapor phase to flow between the reservoir 15 and remaining portions of the container 10. Accordingly, in optional embodiments, openability of partition 20 is mechanically linked to removal / opening and re- attachment/ reclosing of the lid. In this manner, reservoir 15 is exposed to the headspace 30 only when the lid is attached so as to maintain desirable levels of carrier within the cosmetic 5.

[076] In certain embodiments, barrier 40, which is permeable to the vapor of carrier, is provided to aid in containment of the reservoir 15. In certain embodiments, the composition of the reservoir 15 may be such that barrier 40 is not required. This may occur when the solid reservoir material is provided as a single article of fabrication. Optionally, when the solid reservoir material is provided as a granular or particulate substance (e.g., zeolite), a membrane, mesh or grating, fabricated from a suitable material including but not limited to ceramic, may serve as the barrier 40. Optionally, barrier 40 will be a porous material, with pore size smaller than the particle size of the solid reservoir substance, but sufficiently large to allow for passage of the vapor of carrier. Preferentially the grain size of the solid reservoir material will be substantially larger than the pores of barrier 40, in order to minimize clogging of the pores in barrier 40 and to prevent solid reservoir material from migrating across barrier 40.

Exemplary Embodiment B: Lipstick

[077] There is shown in FIGs. 2(a)-(c) an optional embodiment of a package, according to an aspect of the disclosed concept. In this embodiment, the cosmetic (not shown) is lipstick, within optional sheath 35, which is packaged in container 10. Positioned within the container 10 is a reservoir 15 containing solid reservoir material, and a selectively openable partition 20, between the reservoir 15 and the cosmetic 5. The solid reservoir material, which may for example be a zeolite or other material with a pore size configured to adsorb molecules of a desired carrier, is impregnated with molecules of the carrier, such as isododccanc. For simplicity, reservoir 15 is depicted as being positioned below the cosmetic 5; however, any position within container 10 that is exposed to (in gaseous communication with) a headspace 30 is suitable. Attached to the container is a preferably removable lid 25. The lid, when attached to the container to cover the cosmetic 5, defines a headspace 30 surrounding the cosmetic 5. Also shown is optional barrier 40 above the reservoir, thus separating the reservoir 15 from the remainder of the container 10. The partition 20, when closed, is gas impermeable.

[078] Depicted in FIG. 2(a) is the exemplary embodiment as originally provided to the consumer, with lid attached so as to cover the cosmetic 5. In this state, partition 20 is in a closed state (and is thus represented by drawing partition 20 with a solid line) so as to retain the carrier within the reservoir 15.

[079] Depicted in FIG. 2(b) is the exemplary embodiment with lid 25 removed from the container. Removal or opening of the lid operates to selectively open partition 20 (which is represented by drawing partition 20 with a broken line), so as to allow the vapor of carier to flow between the reservoir 15 and remaining portions of the container 10. In some embodiments, selective opening of partition 20 occurs upon irreversible deforming or breaking partition 20. In this manner, the reservoir serves to replenish carrier, via headspace 30, only after the lipstick is unsealed and first exposed to atmosphere.

[080] Depicted in FIG. 2(c) is the package in its closed state after initial removal or opening and re-attachment of the lid. In this state, partition 20 remains in an open state (which is represented by drawing partition 20 with a broken line) and is permeable to the vapor of the carrier, thus allowing replenishment of the cosmetic with the carrier from the reservoir.

Exemplary Embodiment C: Lipstick

[081] There is shown in FIGs. 3(a)-3(c) an optional embodiment of a package for lipstick, according to an aspect of the disclosed concept. The cosmetic 5 is lipstick, packaged in a container 10. Attached to the container is a preferably removable lid 25. The lid, when attached to the container to cover the cosmetic 5, defines a headspace 30 surrounding the cosmetic 5. Positioned within the removable lid 25 is a reservoir 15, containing solid reservoir material. The solid reservoir material, which may for example be a zeolite or other material with a pore size configured to to adsorb molecules of a desired carrier, is impregnated with molecules of the carrier, such as isododecane. Positioned within the removable lid 25 is barrier 40 to hold the solid reservoir material in place, and partition 20, below barrier 40. Partition 20 is oriented so that, when removable lid 25 is closed, partition 20 is above the cosmetic 5.

[082] An advantage of the configuration depicted in FIG. 3 is that reservoir 15 is positioned above cosmetic 5. When oriented with the lid above the container, carriers which are heavier than air will flow downward from reservoir 15 to cosmetic 5.

[083] Also envisioned is a related embodiment, not shown, in which initially an impermeable partition 20 is irreversibly deformed or broken, causing an increase in permeability to carrier. This embodiment will thus behave similar to Embodiment B, above.

Exemplary Embodiment D: Semi-solid cosmetics

[084] There is shown in FIGs. 4(a)-4(c) an optional embodiment of a package suitable for semi- solids, according to an aspect of the disclosed concept. Certain cosmetics are semi-solid (such as some creams), are not resistant to deformation to applied force, and therefore are preferentially packaged in tubs or jars. Semi-solid cosmetic 5 is packaged in container 10 which is sealed with a preferably removable lid 25. Internal to lid 25 is reservoir 15 containing solid reservoir material, which may for example be a zeolite or other material with a pore size configured to to adsorb molecules of a desired carrier, is impregnated with molecules of the carrier, such as isododecane. Solid reservoir material 15 is optionally held in place with barrier 40.

[085] As with exemplary embodiment A, this exemplary embodiment contains a partition 20 which is permeable to vapor when lid is attached, and impermeable to vapor when lid is removed. This behavior is represented by depicting partition 20 with a broken line in FIG. 4(b), and with a solid line in FIG. 4(c).

[086] Also envisioned is a related embodiment, not shown, in which an initially impermeable partition 20 is irreversibly deformed or broken, causing an increase in permeability to carrier. This embodiment will thus behave similar to Embodiment B, above.

[087] This embodiment is preferentially suited for cosmetic 5 which is sufficiently rigid to maintain its shape upon short, infrequent inversions of the package. It will be appreciated that, on prolonged inversion, sufficiently fluid cosmetics can come into contact with partition 20, barrier 40, or reservoir 15, thus potentially affecting hydrocarbon replenishment. [088] Tn some embodiments, the package is designed so as to encourage the consumer to keep the package in an upright orientation, so that the semi-solid cosmetic 5 remains at the bottom of the container during application. In some embodiments, efficacy of carrier replenishment from reservoir 15 is not substantially decreased on periodic inversion of the package.

Exemplary Embodiment E: Squeezable containers for semi-fluid cosmetics

[O89J There is shown in FIGs. 5(a)-5(c) optional embodiments of packages for semi-fluid formulations (such as some gels), according to optional aspects of the disclosed concept. FIG. 5(a) depicts a tapered design; FIG. 5(b) depicts a cylindrical design. FIG. 5(c) depicts a schematic of the components. The semi-fluid cosmetic 5 is packaged in container 10. Attached to the container is a removable lid 25. The lid, when attached to the container, defines a headspace 30 surrounding the cosmetic 5. Positioned within the removable lid 25 is a reservoir 15 containing solid reservoir material, and barrier 40 to hold the solid reservoir material in place. Attached to removable lid 25 is nozzle 45 and optional flip-top 50, allowing easy dispensing of cosmetic 5.

[090] Application of cosmetic 5 is aided by compression of the container 10 so as to force cosmetic 5 through nozzle 45. Depending on the geometry of the package and the physical nature of cosmetic 5, this may tend to force cosmetic 5 in proximity to barrier 40 and to reservoir 15. Positive pressure within container 10 will tend to force cosmetic 5 through nozzle 45, open to atmospheric pressure, rather than towards barrier 40. In certain embodiments, container 10 will be designed so as to encourage consumer to orient the package upright, so as to promote drainage of cosmetic 5 away from barrier 40.

Exemplary Embodiment F : Spray containers for semi-fluid cosmetics

[091] There is shown in FIGs. 6(a) and 6(b) an optional embodiment of a package for semifluid formulations, according to an aspect of the disclosed concept. The semi-fluid cosmetic 5 is packaged in container 10. Attached to the container is a removable lid 25. The lid, when attached to the container, defines a headspace 30 surrounding the cosmetic 5. Positioned within the removable lid 25 is a reservoir 15 containing solid reservoir material, barrier 40 to hold the solid reservoir material in place, and partition 20. Attached to removable lid 25 is spray nozzle 45. In some embodiments, partition 20 opens upon application of pressure on the upper spraying button, and closes once the pressure is released. Closure of partition 20 will avoid flow of the semi-fluid cosmetic into the reservoir 15. Tn some embodiments, design features will prompt the consumer to hold the package upright during storage and/ or spraying, so that the semi-fluid cosmetic 5 remains at the bottom of the container during application.

Exemplary Embodiment G: Multilayer containers for semi-solid cosmetics

[092] There is shown in FIGs. 7(a) and 7(b) an optional embodiment of a package for semisolid formulations, according to an aspect of the disclosed concept. The semi-solid cosmetic 5 is packaged in container 10, comprising an outer, impermeable shell, and an inner, permeable layer that serves as barrier 40. Between the outer shell and inner layer of container 10 is a reservoir 15 containing solid reservoir material. The reservoir can be located in the bottom of the container, the vertical walls of the container, or both. Attached to the container is a removable lid 25. The lid, when attached to the container, defines a headspace 30 surrounding the cosmetic 5.

Removable lid 25 can also incorporate a reservoir 15, containing solid reservoir material, held in place by barrier 40.

[093] This exemplary embodiment may be suitable for semi-solid cosmetics, including lotions and gels, which are sufficiently viscous to substantially retain their shape. Preferentially, seepage of the semi-solid cosmetics through barrier 40 and into the reservoir 15 will be sufficiently low so as not to substantially impair the overall replenishment of cosmetic 5 with earner.

[094] The invention is further illustrated by the following examples.

EXAMPLE 1: Monte Carlo simulations on FAU-type zeolite

[095] Monte Carlo simulation with a "united atom model", where each CHx is described as a single interaction center: TraPPE force field and applying the MCCCS Towhee code (Martin, 2013) shows that FAU-type zeolite with 12 MR (Member Rings) pore opening of 0.74 nm and a super cage diameter of 1.124 nm, can adsorb in its micropores a quantity estimated at saturation to 8 molecules of isododecane per unit cell (1 isododecane molecule per supercage of FAU framework) which corresponds to a maximum loading of 11.8 wt.% (0.7 mmol / g) (see FIG. 8).

EXAMPLE 2: TGA analysis of isododecane

[096] Thermogravimetric analysis (TGA) behavior of a sample of isododecane is shown in FIG. 9. A single weight loss curve can be observed, from ambient temperature to about 150 °C, which is attributed to evaporation of isododecane. EXAMPLE 3: TGA analysis of hydrophilic Y zeolite impregnated with isododecane [097] A 1.654 g sample of CBV 100, consisting of a Y zeolite with a Si/ Al ratio of 2.55 purchased from Zeolyst, was hydrated with 0.346 g H2O, to provide a sample consisting of 17.3 wt. % of H2O. To a polypropylene bottle was added 2 g of the hydrated CBV 100, followed by 0.479 g of isododecane. The bottle was then closed, and the mixture was stirred mechanically for 1 h. The final weight composition of the mixture was: 14 wt.% water; 19.3 wt.% isododecane and 66.7 wt.% anhydrous CBV 100 zeolite.

[098] Thermogravimetric analysis was performed under dry air on 50 mg of this impregnated sample. The temperature was increased from room temperature to 500 °C with a heating rate of 10 °C per minute. The result is shown in FIG. 10. A first weight loss of about 28 wt.%, from 30 °C to 150 °C is attributed to physisorbed water contained in the micropores (14 wt.%) of the zeolite and the isododecane adsorbed at the external surface of the zeolite (14 wt.%). A second weight loss of about 4.7 wt.%, from about 225 °C to 400 °C, is attributed to loss of isododecane adsorbed in the micropores. This second loss is accompanied with an exothermic peak characteristic of organic decomposition as shown from heat flow of curve (b). In comparison, thermogravimetric analysis performed under the same conditions on pure isododecane shows a single weight loss from 30 °C to 150 °C (see FIG. 9).

[099] These results show, that despite the hydrophobic character of this aliphatic hydrocarbon (isododecane) and its non-miscibility with water, hydrated hydrophilic zeolites can still adsorb and store isododecane in their pores.

EXAMPLE 4: Desorption of isododecane from impregnated hydrophilic Y zeolite [0100] 45 mg of isododecane alone or hydrated CBV 100 impregnated with isododecane

(example shown above) was introduced into an alumina crucible (internal radius: 0.326 cm) placed on a microbalance at 22 °C (regulated temperature) under atmospheric pressure and a relative humidity around 30 %. Isododecane was allowed to evaporate freely, without stirring. The mass of the isododecane or impregnated CBV 100 zeolite remaining in the alumina crucible was measured at regular intervals. Consequently, the amount of evaporated isododecane can be deduced at regular intervals (knowing that the state of hydration of CBV 100 is stable under these conditions). The evaporation rate of isododecane is expressed in mg of evaporated isododecane per unit area (cm ² ) and per unit of time (minute).

[0101] Isododecane evaporation rate from pure isododecane is 0.183 mg / cm ² / minute. [0102] Isododecane evaporation rate from the impregnated CBV 100 zeolite is 0.128 mg I cm ² / minute.

[0103] These results show that isododecane can be easily desorbed / released from the impregnated microporous materials.

EXAMPLE 5 : TGA analysis of silica gel impregnated with isododecane [0104] Grade 11 silica gel with a mesoporous volume around 0.42 cm ³ / g and surface area of 745 m ² / g was purchased from Grace. This silica gel has high affinity for water and can adsorb up to 33-34 % of its weight at 22 °C and 80 % relative humidity. This value decreases up to 20 wt. % of water uptake at 22 °C and 30 % relative humidity.

[0105] To 2 g of silica gel in a polypropylene bottle was added 0.534 g of isododecane. The bottle was then closed, and the mixture was stirred mechanically for 1 h. The final weight composition of the mixture is: 1.9 wt.% water; 21.1 wt.% isododecane and 77 wt.% silica gel. [0106] Thermogravimetric analysis was performed under dry air on 50 mg of the nonimpregnated and impregnated sample prepared above. The temperature was increased from 30 °C to 500 °C with a heating rate of 10 °C per minute. The results are shown in FIGs. 11(a) and 11(b). Two weight losses are observed on the non-impregnated silica gel (FIG. 11(a)): the first of about 1.9 wt.%, from 50 °C to 230 °C, is attributed to physisorbed water present in the porosity, and the second of about 3 wt.% observed between 230 °C and 500 °C, is attributed to dihydroxylation (removal of silanol groups present at the surface of silica particles). For the impregnated silica gel, two weight losses are also observed (FIG. 11(b)): the first of about 23 wt.%, from 30 °C to 230 °C, is attributed to physisorbed water (1.9 wt.%) and isododecane (21.1 wt.%) present in the pores, and the second of about 3 wt.%, from about 230 °C to 500 °C, is attributed to dihydroxylation (removal of silanol groups present at the surface of silica particles).

EXAMPLE 6: Desorption of isododecane from impregnated silica gel [0107] A 45 mg sample of the Example 4 material was introduced into an alumina crucible (internal diameter: 0.652 cm) placed on a microbalance at 22 °C (regulated temperature) under atmospheric pressure and a relative humidity around 30 %. Isododecane was allowed to evaporate freely, without stirring. The mass of the impregnated CBV 100 zeolite remaining in the alumina crucible was measured at regular intervals. The evaporation rate of isododecane is expressed in mg of evaporated isododecane per unit area (cm2) and per unit of time (min) and corrected by the water (humidity) uptake by the silica gel under the same conditions of temperature, pressure and humidity.

[0108] The observed rate of evaporation of isododecane from the impregnated silica gel was 0.11 mg / cm ² 1 min.

EXAMPLE 7: TGA analysis of FAU-type zeolite beads

[0109] FAU-type zeolite beads (1.2-2 mm) (13XBFK) with a microporous volume of 0.32 cm ³ / g were purchased from CWK. To a polypropylene bottle was added 2 g of hydrated FAU- type beads, followed by 0.267 g of isododecane. The bottle was then closed, and the mixture was stirred mechanically for 1 h. The final weight composition of the mixture was: 14.9 wt.% water;

1 1 .8 wt.% isododecane and 73.3 wt.% dehydrated FAU-type zeolite beads.

[0110] Thermogravimetric analysis was performed under dry air on 50 mg of both the nonimpregnated and impregnated FAU-type zeolite beads prepared above. The temperature was increased from 30 °C to 500 °C with a heating rate of 10 °C per minute. The results are shown in FIGs. 12(a) and 12(b). One continuous weight loss from 40 °C to 430 °C is observed on the nonimpregnated beads (14.9 wt.%) which is attributed to the sum of two contributions (FIG. 12(a)): a 12.7 wt.% loss due to physisorbed water and a 2.2 wt.% loss at higher temperature attributed to the dihydroxylation (removal of silanol groups present at the surface of zeolite crystals). For the impregnated beads, three weight losses (FIG. 12(b)) are observed. A first loss of 12 wt.%, from 40 °C to 120 °C is attributed to loss of physisorbed water. A second loss of 8.1 wt. %, from 120 °C to 260 °C, is attributed to loss of isododecane. A third loss of about 6.5 wt.%, from about 300 °C and 500 °C is attributed to the dihydroxylation (removal of silanol groups present at the surface of zeolite crystals) 2.2 wt.% and isododecane adsorbed in the micropores of zeolite (4.3 wt.%).

EXAMPLE 8: Desorption of isododecane from impregnated FAU-type zeolite beads [0111] A 45 mg sample of the Example 7 material was introduced into an alumina crucible (internal radius: 0.326 cm) placed on a microbalance at 22 °C (regulated temperature) under atmospheric pressure and a relative humidity around 30 %. Isododecane was allowed to evaporate freely, without stirring. The mass of the impregnated zeolite beads remaining in the alumina crucible was measured at regular intervals. Consequently, the amount of evaporated isododecane can be deduced at regular intervals. The evaporation rate of isododecane is expressed in mg of evaporated isododecane per unit area (cm ² ) and per unit of time (min). [01 12] The observed rate of evaporation of isododecane evaporation rate from the impregnated zeolite beads was 0.08 mg I cm ² 1 min, which is lower than the rate observed for impregnated FAU-type zeolite powder (see example 3).

EXAMPLE 9: Monte Carlo simulations on *BEA-type zeolite

[0113] Monte Carlo simulation with a "united atom model", where each CHx is described as a single interaction center: TraPPE force field and applying the MCCCS Towhee code (Martin, 2013) shows that *BEA-type zeolite can adsorb in its micropores a quantity estimated at saturation to 2.3 molecules of isododecane per unit cell which corresponds to a maximum loading of 11 wt.% (0.59 mmol / g) (see FIG. 13).

EXAMPLE 10: TGA analysis of impregnated *BEA-type zeolite

[0114] Pure silica zeolite beta (*BEA-type) has an open structure with pores delimited by 12 MR with an approximate diameter of 0.66-0.77 nm (for 12 MR pore opening) (see FIG. 13) and 1.2-1.3 nm (for cavities). It possesses a microporous volume of 0.24 cm ³ I g. This zeolite was synthesized according to the fluoride route described by Camblor et al. (Camblor, 1996). The crystallization took 24 h at 150 °C in PTFE-lined stainless steel autoclave. In order to remove the organic template, the zeolite was calcined at 550 °C for 7 h.

[0115] To a polypropylene bottle was added 2 g *BEA-type zeolite, followed by 0.403 g of isododecane. The bottle was then closed, and the mixture was stirred mechanically for 1 h. The final weight composition of the mixture is: 0.2 wt.% water; 16.8 wt.% isododecane and 73 wt.% *BEA-type zeolites.

[0116] Thermogravimetric analysis was performed under dry air on 50 mg of the nonimpregnated and impregnated *BEA-type zeolite prepared above. The temperature was increased from 30 °C to 500 °C with a heating rate of 10 °C per minute. The results are shown in FIGs.

14(a) and 14(b). One small weight loss is observed on the non-impregnated *BEA-type zeolite (0.2 wt.%) attributed to physisorbed water present at the external surface of these hydrophobic zeolite crystals (due to the presence of slight hydroxyl defects on the external surface). For the impregnated zeolite, two weight losses are observed: the first (from 30 °C to 150 °C) attributed to physisorbed water (0.2 wt.%) and isododecane adsorbed at the external surface or between zeolite crystals (5.8 wt.%), and the second loss of about 11 wt.% observed between 150 °C and 320 °C attributed isododecane adsorbed in the micropores of zeolite (11 wt.%). [01 17] This result corroborates with the results of the Monte Carlo simulation which shows that this zeolite can adsorb in its microporcs a quantity estimated at saturation at 2.3 molecules of isododecane per unit cell, which corresponds to a maximum load of 11% (0. 59 mmol/g).

EXAMPLE 11: Desorption of isododecane from impregnated *BEA-type zeolite [0118] A 45 mg sample of pure silica *BEA-type zeolite impregnated with isododecane (example 10) was introduced into an alumina crucible (internal diameter: 0.652 cm) placed on a microbalance at 22 °C (regulated temperature) under atmospheric pressure and a relative humidity around 30%. Isododecane was allowed to evaporate freely, without stirring. The mass of the impregnated pure silica *BEA-type zeolite remaining in the alumina crucible was measured at regular intervals. The evaporation rate of isododecane is expressed in mg of evaporated isododecane per unit area (cm ² ) and per unit of time (minute). The observed rate of evaporation of isododecane from the impregnated pure silica *BEA-type zeolite is 0.107 mg/ cm ² / min.

EXAMPLE 12: Proof of concept using PEGGY SAGE brand Lipsticks [0119] Several samples of PEGGY SAGE brand lipsticks (see FIG. 15) containing isododecane in their lipstick formulation were used in these experiments. First, the lipstick packaging dead volume was deduced using the parameters as shown in FIG. 16 and below equations.

[0120] Geometrical parameters: Di = id of the cylindrical enclosure = 14.77 mm; D2 = od of the cylindrical lipstick = 12.82 mm; Hi = height of the cylindrical headspace = 34.96 mm; H2L = height of the lower edge of the beveled lipstick = 20.10 mm; H2H = height of the higher edge of the beveled lipstick = 26.02 mm; Vi = total interior volume of the headspace; V2 = volume of the lipstick.

[0121] At equilibrium:

Vi = volume of a cylinder = it r ² h = i h (d/2) ²

= 3.14 x Hi x (Di/2) ²

= [ 3.14 x 34.96 mm x (14.77 mm / 2) ² ]

= 5986.9 mm ³

V2 = [3.14 x H2H x (D2/2) ² ]- [3.14 x H2L x (D2/2) ² ] = [ 3.14 x 26.02 mm x (12.82 mm / 2) ² ] - [ 3.14 x 20.1 mm x (12.82 mm / 2) ² ]

= 2975.12 mm ³

V = Dead volume present in the headspace of the lipstick cap

= Vi - V ₂

= 5986.9 mm ³ - 2975.12 mm ³

= 3011.12 mm ³

[0122] The effect of 140 openings was then considered. The fraction of isododecane lost due to evaporation during the 140 openings of the lipstick, each for short time, was calculated:

[0123] At equilibrium:

Pvap = 0.1 kPa = 0.76 Torr = 0.001 Atm at 25 °C for isododecane

Ilvap = PvapV / RT

= [ 0.001 Atm X (3011.776 x IO’ ⁶ L)] / [ 0.082 L Atm / (mol °K) x 293 K)

= 1.25 x IO ⁷ mol

FW = 170.34 g I mol mvap = mass of isododecane in vapor phase at equilibrium

= Ilvap X FW

= 1.25 x IO ⁷ mol x 170.34 g / mol

= 2.135 x IO’ ⁵ g fi = fraction of isododecane lost for 140 uses

= mass of carrier in vapor phase x 140

= 2.135 x IO’ ⁵ g x 140

= 2.989 x IO’ ³ g

= 2.989 mg

[0124] The smallest amount of FAU-type zeolite beads needed to compensate or avoid isododecane evaporation for lipstick formulation can be than deduced taking into account that dehydrated FAU-type zeolite can adsorb in its micropores 11.8 wt.% of isododecane (see below): mzeo = 2.989 mg / (1 1.8 / 100)

= 25.33 mg of zeolite 13X (FAU) = 0.02533 g = 25.33 mg

[0125] 3D printed porous grids were prepared (FIGs. 17(a)-17(c)) and used as a container for the impregnated zeolite X beads to be inserted in the lipstick packaging to avoid direct contact between zeolite beads and the lipstick.

[0126] Activation of zeolite beads: 1 g of zeolite FAU-type zeolite beads described above in exemple 7 were added in crucibles, then regenerated overnight in oven at 400 °C to remove all the water and VOCs molecules present inside their micropores. The resulting product was then placed in an aluminum bag and sealed, and the aluminum bags were then placed in a desiccator containing dehydrated 3A or 4A zeolites.

[0127] 100 mg of dehydrated zeolite FAU beads were placed in the 3D printed grid. Then, the beads were impregnated at 11.8 wt.% with isododecane. Then, the grid with impregnated beads was placed at the upper place of the lipstick cap as shown in FIGs. 18(a)-18(d).

[0128] Control packages, with the porous grids but without the impregnated zeolite beads, were also prepared.

[0129] During the experiments, the lipsticks were opened for 30 sec, 2 times (morning and afternoon) per working day. Two series of experiments were run in different climatic chambers: one series at 22 °C and a relative humidity of 80%; another series at 40 °C and a relative humidity of 75%.

[0130] For each opening, the weights of the different parts of the lipstick were determined using a precision balance, especially the lower part of the packaging containing the lipstick formulation.

Mi = Dark grey part of the lipstick packaging + lipstick

[0131] For each series of temperature, 2 lipsticks with impregnated zeolite beads and 2 control lipsticks with only the porous grids were studied. The mass of the lipstick-containing part of the packaging was measured periodically.

[0132] After 73 days of exposures at 22 °C and 80% relative humidity, the control packages lacking the impregnated zeolite beads lost mass in their lipstick-containing parts (plots (a) and (b) of FIG. 19), while the packages containing the impregnated zeolite beads gained mass in their lipstick-containing parts (plots (c) and (d) of FIG. 19). The different behavior represents a relative loss of 43 mg of isododecane in the controls compared to the packages containing the impregnated zeolite beads in the packaging.

[0133] After 73 days of exposures at 40 °C and 75% relative humidity, the control packages lost mass in their lipstick-containing parts (plots (a) and (b) of FIG. 20). Loss of mass was also observed for the packages containing the impregnated zeolite beads (plots (c) and (d) of FIG.

20), although to a lesser degree. The difference in behavior represents a relative loss of between 47 to 52 mg of isododecane in the controls compared to the packages containing the impregnated zeolite beads in the packaging.

[0134] These results clearly show that impregnated zeolite beads can easily desorb isododecane molecules present in their pores and reach the maximum isododecane vapor that can be stored in the dead volume of the closed packaging, thereby mitigating evaporation of isododecane molecules present in the formulation.

[0135] At the end of the experiments, the outer diameter of the lipstick cylinders were measured using an image -based measurement system KEYENCE IM-7030T Serial n°6C020149 (AA5), single measure. The lipstick was placed in a specific 3D-printed holder (orange PLA) (FIG. 21 and Table 1 below).

[0136] Regardless of the conditions of storage of lipsticks packaging, it seems that in the absence of impregnated zeolite beads, the outer diameters of the lipstick cylinders are 0.62 to 0.8 % smaller (due to the evaporation of isododecane as shown above).

Table 1. Outer diameter of the lipstick cylinders measured by KEYENCE IM-7030T device. [0137] The mechanical properties (rigidity) of lipstick cylinders were measured using a dynamometer AFG 50N (P24) mounted on a test bench Mccmcsin Multitcst 2.5dv (P 17). The lipstick is placed in a specific 3D-printed holder (orange PLA) and the lipstick is completely extended (see FIG. 22 and Table 2 below).

[0138] Whatever the conditions of storage of lipsticks packaging, it seems that in the presence of impregnated zeolite beads the needed minimum charge to break the lipstick is 13.72 % (at 22 °C and 80% RH) to 15.96 % (at 40 °C and 75% RH) lower than that required for lipsticks in the absence of impregnated zeolite beads (due to the evaporation of isododecane as shown above). With the evaporation of isododecane (which plays the role of emollient) from lipstick formulations, the stiffness (rigidity) of the lipsticks increases.

Table 2. Mechanical properties of the lipsticks measured on dynamometer AFG 50N.

* The lipsticks were completely extended for the mechanical tests.

[0139] Finally, after 99 days of exposure, the lipsticks that were stored in packaging having the isododccanc-imprcgnatcd FAU-typc zeolite beads displayed a higher glossy aspect (sec FIG. 23(a) than those stored in the absence of impregnated zeolite beads, as shown in FIG. 23(b).

References

[0140] Auguste F, Arnaud P, Fouron J-Y. 2000. Make-up or care composition without transfer containing a volatile linear silicone. Patent, EP0979646.

[0141] Bailey ME. 1971. Polyurethane film formers. J. Elastoplastics 3: 126-136. [0142] Bentley J. 1999. Organic film formers. Tn: Lamboume R, Strivens TA, eds. Paint and surface coatings: Theory and practice, 2nd ed. Amsterdam, NH: Elsevier.

[0143] Camblor MA, Corma A, Valencia S. 1996. Spontaneous nucleation and growth of pure silica zeolite-P free of connectivity defects. Chem. Comrnun. 2365-2366.

[0144] De Clermont-Gallerande H. 2006. Evolution des corps gras utilises dans la formulation des rouges a levres au cours des quinze demieres annees. OCL 13: 322-325. [0145] Hubert C, Meriadec C, Panizza P, Artzner F, de Clermont-Gallerande H. 2020.

Comparison between a wax/volatile oil mixture and vegetable butters in a long-lasting make-up formula: A rheological and structural study compared to product performance. OCL T. 42. [0146] Martin MG. 2013. MCCCS Towhee: a tool for Monte Carlo molecular simulation. Mol. Simul. 39(14-15): 1212-1222.

[0147] Rathke TD, Hudson SM. 2006. Review of chitin and chitosan as fiber and film formers. J Macromol. Sci. C 34(3): 375-437.

[0148] Wisniewski KE, Wojsz R. 1992. Description of water vapor adsorption on various cationic forms of zeolite Y. Zeolites 12: 37-41.

[0149] All references, patents or applications, U.S. or foreign, cited in the application are hereby incorporated by reference as if written herein in their entireties. Where any inconsistencies arise, material literally disclosed herein controls.

[0150] From the foregoing description, one skilled in the art can easily ascertain the essential characteristics of this invention, and without departing from the spirit and scope thereof, can make various changes and modifications of the invention to adapt it to various usages and conditions.