Hamburg

Cosmetic composition with reduced stickiness

The present invention belongs to the cosmetic field and relates to a cosmetic composition containing glycerol and at least one antiperspirant active ingredient. By employing glycerol in certain quantities in the cosmetic composition, it was achieved that the cosmetic composition feels less sticky upon application to the human skin.

Cosmetic compositions can generally be subdivided into two groups. On the one hand, there are the rinse-off composition, which are applied on the skin and then rinsed off with water. Typical examples are shower gels, shampoos or other cleansing products. On the other hand, there is the group of leave-on products, which are also applied to the skin, but - in contrast to the rinse-off compositions - these compositions remain on the skin until they are substantially absorbed. Therefore, leave-on compositions are usually present for a longer period of time on the skin than rinse-off products. As a result, there is an increased demand on the comfort with regard to the skin feeling of such a leave-on composition. For example, it is desirable that these compositions do not feel not greasy, have a light consistency, absorb quickly, feel moist and are not sticky.

One typical example of leave-on compositions are antiperspirant products that are commonly applied to the axillary region of the human body to prevent and/or reduce the sweat production. Technically, this effect is achieved by antiperspirant active ingredients blocking the sweat glands. Most commonly, those antiperspirant active ingredients are specific aluminum salts, which polymerize and thereby block the entrance of the sweat glands. Here, it should be noted that such a blocking of the sweat glands is only temporarily. The aluminum salts, which are most commonly used as antiperspirant active ingredients, are water soluble such that normal sweat production usually removes the polymerized aluminum salts within 72 hours from the sweat glands. Alternatively, the aluminum salts may be removed by washing the axillary region with water.

Standard commercial antiperspirant products are mostly formulated as aerosol, pump spray, roll-on preparation, cream or stick. The popularity of these products varies depending on the region. For example, in Europe most markets are dominated by aerosol and roll-on preparations, whereby in North America customers prefer to use antiperspirant sticks. Roll-on preparations are applied from a reservoir container via a rotatably mounted ball by rolling the ball over the human skin.

A general issue of antiperspirant cosmetic compositions is that these compositions often feel sticky upon application to the skin. Therefore, there have been a number of approaches to reduce the stickiness of antiperspirant composition in recent years. For example, WO 2004047786 A1 discloses antiperspirant compositions containing a polar silicone emollient. Due to the presence of the special silicone emollient, the compositions are described as dry- and-non sticky. However, the document is entirely silent on the use of glycerol.

The document US 20070190089 A1 discloses the use of detackifying agents to eliminate the stickiness and tackiness normally associated with aqueous antiperspirant compositions. The detackifying agents are described as water soluble esters of an alcohol, glycol or polyol and a water soluble organic acid. None of the disclosed compositions contains glycerol.

US 5833963 A discloses the use of polyglycols as detackifying agents in water based antiperspirant formulations. In column 2 lines 1 to 6 it is described that the use of

glycerin/glycerol in antiperspirant products increases the stickiness of the formulation.

Generally, it can be noted that there is still a demand on alternative and more cost efficient approaches to reduce the stickiness of cosmetic antiperspirant compositions.

As pointed out above, the use of glycerol in antiperspirant cosmetic compositions is always associated with an increase of stickiness. However, it was surprisingly found by the applicant that the compositions according to the present invention do not suffer the disadvantages discussed above. It was especially surprising that in certain antiperspirant compositions the presence of glycerol actually reduces the stickiness of composition.

The present invention is a cosmetic composition containing, based on the total weight of the composition,

a) 0.5% to 4% by weight glycerol, and

b) 6% to 16% by weight, preferably 7.5% by weight to 12% by weight and more

preferably 9% to 11 % by weight of at least one antiperspirant active ingredient.

Therefore, another subject of the present invention is the use of 0.5% to 4% by weight glycerol in a cosmetic composition containing at least one antiperspirant active ingredient to reduce the stickiness of the composition upon application to the human skin, wherein the % by weight is based on the total weight of the cosmetic composition.

All the weight percentages (% by weight) given below are based, unless otherwise stated, on the total weight of the cosmetic composition. If ratios of certain components are disclosed in the following description, these ratios refer, unless otherwise stated, to weight ratios of the components.

Unless otherwise stated, all tests and measurements were performed under“normal conditions”. The term "normal conditions" refers to 20°C, 1013 hPa and a relative humidity of 50%.

For the purposes of the present disclosure, the term "free from" means that the proportion of the respective substance is less than 0.05% by weight. This ensures that entrainments or impurities with these substances are not included as "free from" according to the invention.

The term“skin” refers solely to human skin.

In addition to the glycerol, the cosmetic compositions of the present invention contain 6% to 16% by weight, preferably 7.5% to 12.5% by weight and more preferably 9% to 1 1% by weight, of at least one antiperspirant active ingredient, based in each case on the total weight of the cosmetic composition.

One group of preferred antiperspirant active ingredients, which is in accordance with the present invention, are aluminum salts, which may be selected from the following non limiting list:

Aluminum salts such as aluminum chloride, AICI ₃ , aluminum sulfate, Al ₂ (S0 ₄ ) ₃ Aluminum chlorides of the empirical formula [Al ₂ (OH) _m Cl _n ], where m + n = 6 Aluminum chlorohydrate [Al ₂ (OH) ₅ Cl] ^c H ₂ O

Standard Al complexes: Locron P (Clariant), Micro-Dry (Reheis), ACH-331 (Summit), Aloxicoll PF 40 (Giulini). - Capitalized Al complexes: Reach 501 (Reheis), AACH 324 (Summit), AACH 7171 (Summit), Aloxicoll P (Giulini),

Aloxicoll SD100

Aluminum sesquichlorohydrate [AI ₂ (OH) _4, 5CI _{I ,} 5] ^x H ₂ 0 - Standard Al complexes: Aluminum sesquichlorohydrate (Reheis), AACH 308 (Summit) - Capitalized Al complexes: Reach 301 (Reheis)

Aluminum chlorohydrate [Al2(OH) ₄ Cl2] ^x H2O Another group of preferred antiperspirant active ingredients, which can be included in the cosmetic compositions of the present invention, are aluminum-zirconium salts. These aluminum-zirconium salts may be selected from the following non-limiting list:

Aluminum / zirconium glycine trichlorohydrex [AI ₄ Zr(OH)i3Cl3] * H ₂ 0 Gly - standard Al/Zr complexes: Rezal 33GP (Reheis), AZG 7164 (Summit), Zirkonal P3G (Giulini) - Capitalized Al/Zr complexes: Reach AZZ 902 (Reheis), AAZG- 7160 (Summit), Zirkonal AP3G (Giulini)

Aluminum / zirconium glycine tetrachlorhydrex [AI ₄ Zr(OH)i ₂ CI ₄ ] ^c H ₂ 0 Gly - standard Al / Zr complexes: Rezal 36G (Reheis), AZG-368 (Summit), Zirkonal L435G (Giulini) - Capitalized Al / Zr complexes : Reach 908 (Reheis), AAZG-7167 (Summit), Zirkonal AP4G (Giulini)

Aluminum / zirconium glycine Pentachlorhydrex [Al8Zr(OH) ₂ 3Cl5] ^x H ₂ 0 Gly Aluminum / zirconium glycine Octachlorhydrex [Al ₈ Zr(OH) ₂ oCl ₈ ] ^x H ₂ 0 Gly Glycin-free aluminum /zirconium salts

According to the present invention it is particularly preferred, if the at least one antiperspirant active ingredients is selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate. Most preferred is aluminum chlorohydrate.

Hence, it is in particular preferred, if the cosmetic compositions of the present invention contain aluminum chlorohydrate in a total quantity from 7.5% to 12.5% by weight, even more preferred from 9% to 1 1% by weight, based in each case on the total weight of the composition.

In a first preferred embodiment of the present invention it is preferred if the cosmetic compositions are characterized in that they are formulated as oil-in-water macro-emulsion. In terms of the present invention the term macro-emulsion is understood to be an emulsion, therein characterized that the average diameter of the emulsified droplets exceeds 1 pm.

Within the meaning of the present invention, the "average diameter of the emulsified droplets" is preferably understood to be the volume-average droplet diameter D50, which can be determined by conventional methods, for example by laser diffraction. The volume- average droplet diameter D50 is the point in the particle size distribution at which 50 vol.% of the emulsified droplets have a smaller diameter and 50 vol.% of the emulsified droplets have a larger diameter. The cosmetic compositions of the first preferred embodiment of the present invention are preferably therein characterized that the total amount of the oil phase and lipid phase is in the range from 0.5 to 7.5% by weight and more preferably 2.5% to 6.5% by weight, based in each case on the total weight of the cosmetic composition. By definition, emulsifiers are generally not included in the oil phase and lipid phase.

Furthermore, in terms of the present invention it is favorable if the cosmetic compositions of the first preferred embodiment of the invention are free from PPG alkyl ethers as these components may adversely affect the properties of the composition. The same is true for C12-15 alkyl benzoate.

In this first preferred embodiment of the invention it is further preferred, if the cosmetic compositions contain glycerol in a total quantity from 0.75% to 2% by weight and more preferred from 0.8% to 1.2% by weight, based in each case on the total weight of the cosmetic composition. Experimental results have indicated that by the addition of such an amount of glycerol the stickiness of the composition is reduced.

Generally, it is preferred if the oil phase and lipid phase of the cosmetic compositions, which are in accordance with the first preferred embodiment of the invention, solely contain volatile silicon oils and perfume, wherein the total quantity of the perfumes does preferably not exceed 1.2% by weight, based in each case on the total weight of the cosmetic composition.

The cosmetic compositions according to the first preferred embodiment of the present invention preferably contain at least one volatile silicone oil. The term volatile silicone oil generally conforms to polyalkylsiloxanes, preferably solely to polydimethylsiloxanes.

As used herein, the term“volatile” refers to those materials which have a measurable vapor pressure at normal conditions. A general description of non-limiting examples of volatile silicone oils can be found in the article“Volatile silicone fluids for cosmetics”, 91 Cosmetic and Toiletries 27-32 (1976).

Furthermore, the volatile silicone oils which are in accordance with the invention are preferably therein characterized that they have a kinematic viscosity in the range from 0.5 cSt (Centistoke) to 10 cSt, preferably 2 cSt to 6 cSt at 25°C. The kinematic viscosity of the volatile silicone oils can be determined using a glass capillary viscometer. The method is described in the publication of the American Society for Testing And Materials (ASTM), Philadelphia, Penn., ASTM D 445-94,“Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity)”.

In the first preferred embodiment of the invention the volatile silicone oil contained in the cosmetic oil-in-water emulsion can be chosen from volatile linear silicone oils. Preferred linear silicone oils that are in accordance with the present invention are volatile linear silicone oils having 2 to 10 siloxane units as for example in the commercial products Dow Corning ® 200 (0.65 cSt), Dow Corning ® 200 (1 ,5 cSt) and Dow Corning ® 200 (5 cSt) from Dow Corning.

Within the first preferred embodiment of the invention the volatile silicone oils contained in the cosmetic composition can also be chosen from the group consisting of volatile cyclic silicone oils. Cyclic silicone oils are generally marketed under CTFA designation

Cyclomethicone. Thereby, volatile cyclic silicone oils that are preferred according to the invention conform to the formula (I)

wherein n is an integer in the range from 3 to 9, more preferably 4 to 6. These oils usually have a vapor pressure of about 13-25 Pa at 20°C.

Suitable cyclic volatile silicone oils for use herein include, but are not limited to the commercial products Mirasil CM5 (Bluestar Silicones) and Xiameter PMX-0245 (Dow Corning).

In terms of the present invention volatile cyclic silicone oils are chosen in favor of the volatile linear silicone oils. Therefore, it is preferred if the at least one volatile silicone oil is selected from volatile cyclic silicone oils, most preferred from volatile cyclic silicone oils which are in accordance with the formula I, wherein n is 5.

Furthermore, within the first preferred embodiment of the present invention it is preferred if the ratio by weight between the total quantity of the volatile silicone oils and the glycerol is in the range from 2:1 to 6:1 , preferably from 2.3:1 to 4.5:1 and most preferably from 2.5:1 to 3.5:1.

Within the first preferred embodiment of the present invention it was found that the stability of the cosmetic oil-in-water macro-emulsions can be increased by adding at least one nonionic emulsifier having an HLB value in the range from 12 to 18. Thus, preferred cosmetic compositions according to the first preferred embodiment of the present invention are therein characterized that at least one nonionic emulsifier having an HLB value in the range from 12 to 18 is contained.

According to the invention the nonionic emulsifiers having an HLB value in the range from 12 to 18 are preferably selected from linear saturated and unsaturated C12 to C24 primary alcohols that are etherified with 7 to 40 ethylene oxide units per molecule. In particular those nonionic emulsifiers having an HLB value in the range from 12 to 18 are preferred that are selected from Laureth, Trideceth, Myristeth, Ceteth, Steareth, Arachideth, and Beheneth, having respectively 7 to 40 ethylene oxide units per molecule. Nonionic emulsifier having an HLB value in the range from 12 to 18 that are most preferred are selected from Steareth-15, Steareth-20, Steareth-21 , Arachideth-20, Arachideth-21 , Beheneth-20, Beheneth-21 , Ceteth- 20, Ceteth-30, Ceteth-15, Myristeth-15 and mixtures thereof.

In addition, it is preferred if the cosmetic compositions according to the first preferred embodiment of the invention contain at least one nonionic emulsifier having an HLB value in the range from 12 to 18, preferably at least one of the above disclosed preferred and most preferred nonionic emulsifier having an HLB value in the range from 12 to 18, in a total quantity from 0.5% to 2% by weight, more preferably 1% to 1.4% by weight, and most preferably from 1.1 % to 1.3% by weight, based in each case on the total weight of the cosmetic composition.

Preferred cosmetic compositions of the first preferred embodiment of the invention are therein characterized that they contain at least one nonionic emulsifier with an HLB value in the range from 3 to 6 to increase the stability of the composition. In this manner, it is avoided that the emulsion separates shortly after the preparation and the product experiences an elongated shelf lifetime without changing its appearance.

Typical examples of preferred nonionic emulsifiers having an HLB value in the range from 3 to 6 are selected from linear saturated and unsaturated C12 to C30 primary alcohols that are etherified with 1 to 4 ethylene oxide units per molecule. More preferred nonionic emulsifiers having an HLB value in the range from 3 to 6 are selected from Laureth, Trideceth, Myristeth, Ceteth, Steareth, Arachideth, and Beheneth, having respectively 1 to 4 ethylene oxide units per molecule. Even more preferred are Steareth-1 , Steareth-2, Steareth-3, Ceteth-1 , Ceteth- 2, Ceteth-3, Myristeth-1 , Myristeth-2, Laureth-1 , Beheneth-2, Beheneth-3, Beheneth-4 and mixtures thereof, whereby Steareth-2 is chosen as the most preferred nonionic emulsifier having an HLB value in the range from 3 to 6.

Generally, for the first preferred embodiment of the present invention, it has to be pointed out that in terms of stability the combination of Steareth-21 as nonionic emulsifier having an HLB value of 12 to 18 and Steareth-2 as nonionic emulsifier having an HLB value in the range from 3 to 6 is most preferred.

Further cosmetic compositions of the first preferred embodiment preferred according to the present invention are therein characterized that the weight ratio of the total quantity of the nonionic emulsifiers having an HLB value in the range from 12 to 18, especially the above disclosed preferred and most preferred nonionic emulsifiers having an HLB value from 12 to 18, and the total quantity of the nonionic emulsifiers having an HLB value in the range from 3 to 6, especially the above disclosed preferred and most preferred nonionic emulsifiers having an HLB value from 3 to 6, is in the range from 1 :1.2 to 1 :2, preferably 1 :1.4 to 1 :1.8 and most preferably 1 :1.5 to 1 :1.7.

According to the first preferred embodiment of the present invention it is possible to include further emulsifier in the cosmetic compositions, however it is preferred if the emulsifiers included in the cosmetic compositions of the first preferred embodiment are limited to those specified above, more preferably to Steareth-2 and Steareth-21.

Within the first preferred embodiment of the present invention it is preferred, if the cosmetic compositions are therein characterized that at least one mineral is contained. According to the invention the mineral is preferably chosen from the group consisting of talc, perlite, kaolin, diatomaceous earth and mica, whereby diatomaceous earth is most preferred. According to the invention, the at least one mineral contained in the cosmetic compositions can also preferably be chosen from the group consisting of minerals having an oil absorption capability from 20 ml/100g mineral to 350 ml/100g mineral, more preferably from 100 ml/100g mineral to 300 ml/100g mineral and most preferably from 200 ml/100g mineral to 250 ml/100g mineral. One suitable example of such a mineral having an oil absorption capability of 225 ml/100g mineral is marketed under the trade name ImerCare 400D (S) by the company IMERYS. According to the invention the oil absorption capability of the mineral is determined according to the ASTM D-1483 - 12(2016) Standard Test Method for Oil Absorption of Pigments by Gardner-Coleman Method.

According to the invention the minerals, especially the preferred minerals disclosed above, are contained in the cosmetic compositions of the first preferred embodiment of the present invention in a total quantity from 0.5% to 3% by weight and more preferably from 0.75% to 1.5% by weight, based in each case on the total weight of the cosmetic composition.

In the first preferred embodiment of the present invention it is preferred if water is contained in the cosmetic compositions in a total quantity from 60% to 90% by weight and more preferably 75% to 85% by weight, based in each case on the total weight of the cosmetic composition.

Furthermore, in a second preferred embodiment of the invention the cosmetic compositions according to the invention contain glycerol in a total quantity from 1.5% to 3.5% by weight and more preferably from 1.9% to 3.1% by weight, based in each case on the total weight of the cosmetic composition. Experimental results have indicated that by the addition of such an amount of glycerol the stickiness of the composition is reduced.

Within this second preferred embodiment of the invention, the cosmetic compositions preferably contain at least one polysaccharide to allow for a quick drying of the composition upon application to the human skin. In terms of the present invention“polysaccharides” are understood as the general term for macromolecular carbohydrates whose molecules are made up of at least 10, but usually considerable more monosaccharide molecules glycosidicallly linked to one another.

A problem often noticed when preparing cosmetic compositions with polysaccharides is that these polysaccharides form lumps when dispensed in water instead of forming a gel.

Regarding the cosmetic compositions of the second preferred embodiment of the present invention, the applicant has also surprisingly discovered that these cosmetic compositions do not suffer the disadvantage discussed above. While not being limited to the theory, it may be the case that the addition of glycerol in the specified quantities avoids the formation of polysaccharide-lumps in the composition. Therefore, preferred cosmetic compositions of the second preferred embodiment of the present invention contain, based in each case on the total weight of the cosmetic composition,

a) 1.5% to 3.5% by weight, preferably 1.9% to 3.1% by weight glycerol

b) 6% to 16% by weight, preferably 7.5% by weight to 12% by weight and more

preferably 9% to 11 % by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and/or aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is preferred, and

c) at least one polysaccharide.

According to the invention, both modified and unmodified polysaccharides can be contained in the cosmetic compositions of the second preferred embodiment of the invention.

One group of polysaccharides preferred according to the invention are cellulose and chemically modified cellulose derivatives, which are preferably selected from the group consisting of methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose,

hydroxypropylmethyl cellulose, hydroxypropylethyl cellulose, hydroxyethylmethyl cellulose, and carboxymethyl cellulose.

Another group of polysaccharides preferred according to the invention are starches, which are preferably selected from the group consisting of corn starch, potato starch, and wheat starch, their constituents such as amylose and amylopectin, starch hydrolysates and starch degradation products such as maltodextrin, the physically or chemically modified starch derivatives, in particular the anionic starch derivatives aluminum starch octenylsuccinate, sodium starch octenylsuccinate, calcium starch octenylsuccinate, distarch phosphates, hydroxyethyl starch phosphates, hydroxypropyl starch phosphates, sodium carboxymethyl starches and sodium starch glycolate.

According to the invention it is preferred, if the cosmetic compositions of the second preferred embodiment contain at least one anionic and/or nonionic polysaccharide, whereby the nonionic polysaccharides are most preferred.

According to the invention it is particularly preferred if the cosmetic compositions of the second preferred embodiment contain at least one polysaccharide selected from the group consisting of methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose,

hydroxypropylmethyl cellulose, hydroxypropylethyl cellulose, hydroxyethylmethyl cellulose and carboxymethyl cellulose, wherein hydroxyethyl cellulose is most preferred. Thereby, it is further preferred, if the total quantity of the polysaccharides, especially of the polysaccharides, which were disclosed above as the preferred ones, is in the range from 0.1 % to 1 % by weight, more preferably 0.25% to 0.6% by weight and most preferably 0.3% to 0.48% by weight, based in each case on the total weight of the cosmetic composition.

One specific cosmetic composition according to the second preferred embodiment of the present invention that is particularly preferred is characterized in that the composition contains, based on the total weight of the cosmetic composition,

a) 1.5% to 3.5% by weight, preferably 1.9% to 3.1% by weight glycerol

b) 7.5% by weight to 12% by weight, preferably 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is preferred, and

c) at least one polysaccharide selected from anionic and/or nonionic polysaccharides.

Another specific cosmetic composition according to the second preferred embodiment of the present invention, which is even more preferred than the one disclosed in the paragraph above, is characterized in that the composition contains, based on the total weight of the cosmetic composition,

a) 1.5% to 3.5% by weight, preferably 1.9% to 3.1% by weight glycerol

b) 7.5% by weight to 12% by weight, preferably 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is preferred, and

c) at least one polysaccharide selected from the group consisting of methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, hydroxypropylmethyl cellulose, hydroxypropylethyl cellulose, hydroxyethylmethyl cellulose and carboxymethyl cellulose, wherein hydroxyethyl cellulose is most preferred.

Another specific cosmetic composition according to the second preferred embodiment of the present invention, which is even more preferred than the one disclosed in the paragraph above, is characterized in that the composition contains, based on the total weight of the cosmetic composition,

a) 1.5% to 3.5% by weight, preferably 1.9% to 3.1% by weight glycerol, b) 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is most preferred, and

c) 0.25% to 0.6% by weight of at least one polysaccharide from the group consisting of methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose,

hydroxypropylmethyl cellulose, hydroxypropylethyl cellulose, hydroxyethylmethyl cellulose and carboxymethyl cellulose.

Another specific cosmetic composition according to the second preferred embodiment of the present invention, which is even more preferred than the one disclosed in the paragraph above, is characterized in that the composition contains, based on the total weight of the cosmetic composition,

a) 1.9% to 3.1% by weight glycerol,

b) 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is most preferred, and

c) 0.25% to 0.6% by weight hydroxyethyl cellulose.

Another specific cosmetic composition according to the second embodiment of the present invention, which is even more preferred than the one disclosed in the paragraph above, is characterized in that the composition contains, based on the total weight of the cosmetic composition,

a) 1.9% to 3.1% by weight glycerol,

b) 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is most preferred, and

c) 0.3% to 0.48% by weight hydroxyethyl cellulose.

Moreover, within the second preferred embodiment of the present invention it is preferred, if the specific cosmetic compositions disclosed above contain water in a total quantity in the range from 50% to 90% by weight, more preferably 63% to 70% by weight, based in each case on the total weight of the cosmetic composition.

In the second preferred embodiment of the present invention, it is further preferred if the specific cosmetic compositions disclosed above contain ethanol. If ethanol is contained in the cosmetic compositions of the second preferred embodiment of the present invention the total quantity of ethanol is preferably in the range from 5% to 30% by weight, more preferably 10% to 20% by weight and most preferably 12% to 16% by weight, based in each case on the total weight of the cosmetic composition.

Further cosmetic compositions of the second preferred embodiment preferred according to the present invention are therein characterized that they additionally contain one or more one quaternary ammonium compound. Quaternary ammonium compound is the name for organic ammonium compounds with quaternary nitrogen atoms.

Suitable quaternary ammonium compounds which can be contained are quaternary ammonium salts defined by the formula (II)

wherein Ri and R ₂ stand for a hydrogen atom or an alkyl chain of 1 to 4 carbon atoms which are optionally substituted with one or more hydroxyl groups,

and wherein R ₃ stands for a saturated or unsaturated, branched or non-branched alky chain of 1 to 24 carbon atoms,

or R ₃ stands for R5CONH(CH ₂ ) _y group, wherein R ₅ is a saturated or unsaturated, branched or non-branched alkyl chain with 7 to 21 carbon atoms and y is an integer in the range from 1 to 4,

or R ₃ stands for R ₆ COO(CH ₂ ) _z group, wherein Re stands for a saturated or unsaturated, branched or non-branched alkyl chain with 7 to 21 carbon atoms and z is an integer in the range from 1 to 4,

and wherein R ₄ stands for a hydrogen atom or for a saturated or unsaturated, branched or non-branched alky chain of 1 to 24 carbon atoms,

or R ₄ stands for a R5CONH(CH ₂ ) _y or R ₆ COO(CH ₂ ) _z group, wherein Rs, R ₆ , y and z have the same meaning as above,

and A is an anion, preferably a methosulfate, ethosulfate, chloride or bromide.

Preferred examples of the above defined quaternary ammonium compounds are selected from the group consisting of octyltrimethylammonium chloride, decyltrimethylammonium chloride, dodecyltrimethylammonium chloride, cetyltrimethylammonium chloride,

stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, tetramethylammonium chloride, tetraethylammonium chloride, palmitamidopropyltrimonium chloride, behenamidopropylethyldimonium ethosulfate, stearamidopropyltrimonium methosulfate, undecylamidopropyltrimonium methosulfate, cetylpyridinium chloride, octyldimethylbenzylammonium chloride, decyldimethylbenzylammonium chloride, stearyldimethylbenzylammonium chloride, didodecyldimethylammonium chloride and dioctadecyldimethylammonium chloride. The more preferred quaternary ammonium compounds are selected from the group consisting of palmitamidopropyltrimonium chloride, behenamidopropylethyldimonium ethosulfate, stearamidopropyltrimonium methosulfate and undecylamidopropyltrimonium methosulfate. Most preferred is palmitamidopropyltrimonium chloride, which is, for example, marketed under the trade name Varisoft PATC by the company Evonik.

The quaternary ammonium compounds are preferably contained in the cosmetic

compositions of the second preferred embodiment of the present invention in the range from 0.1 % to 3% by weight, more preferably 0.3% to 1.5% by weight, based in each case on the total weight of the cosmetic composition.

In addition, cosmetic compositions of the second preferred embodiment of the present invention are preferably therein characterized that they additionally contain one or more anionic surfactants. In the case that the cosmetic compositions of the second preferred embodiment of the present invention contain an anionic surfactant, it is particularly preferred if the anionic surfactant is Laureth-7 Citrate. Laureth-7 Citrate can commercially be obtained under the trade name Plantapon LC 7, supplied by the BASF.

In the case that quaternary ammonium compounds and anionic surfactants are contained in the cosmetic composition of the second preferred embodiment of the present invention, it is further preferred if the ratio by weight between the total quantity of the quaternary ammonium compounds and the anionic surfactants is in the range from 3:1 to 1 :3, more preferred in the range from 2:1 to 1 :2.5 and most preferred in the range from 1.2:1 to 1 :2.

The cosmetic compositions according to the second preferred embodiment of the present invention are preferably characterized in that the total quantity of an optionally contained oil phase and lipid phase is less than 1.5% by weight and more preferably less than 1 % by weight, based in each case on the total weight of the cosmetic composition.

Further, the cosmetic compositions of the second preferred embodiment of the invention are preferably therein characterized that they do not contain emulsified droplets of a second phase. The cosmetic compositions according to the second preferred embodiment of the present invention are in particular characterized in that the composition contains only one phase. That means the compositions are a single phase product.

Hence, another specific cosmetic composition according to the second preferred

embodiment of the present invention is characterized in that the composition contains, based on the total weight of the cosmetic composition,

a) 1.5% to 3.5% by weight, preferably 1.9% to 3.1% by weight glycerol

b) 7.5% by weight to 12% by weight, preferably 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is preferred,

c) at least one polysaccharide selected from anionic and/or nonionic polysaccharides, d) at least one quaternary ammonium compound selected from the group consisting of palmitamidopropyltrimonium chloride, behenamidopropylethyldimonium ethosulfate, stearamidopropyltrimonium methosulfate and undecylamidopropyltrimonium methosulfate, and

e) at least one anionic surfactant.

Still another specific cosmetic composition according to the second preferred embodiment of the present invention, which is even more preferred than the one disclosed in the paragraph above, is characterized in that the composition contains, c based on the total weight of the cosmetic composition,

a) 1.5% to 3.5% by weight, preferably 1.9% to 3.1% by weight glycerol

b) 7.5% by weight to 12% by weight, preferably 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is preferred,

c) at least one polysaccharide selected from methyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, hydroxypropylmethyl cellulose, hydroxypropylethyl cellulose, hydroxyethylmethyl cellulose and carboxymethyl cellulose, wherein hydroxyethyl cellulose is most preferred,

d) at least one quaternary ammonium compound selected from the group consisting of palmitamidopropyltrimonium chloride, behenamidopropylethyldimonium ethosulfate, stearamidopropyltrimonium methosulfate and undecylamidopropyltrimonium methosulfate, and

e) at least one anionic surfactant. Still another specific cosmetic composition according to the second preferred embodiment of the present invention, which is even more preferred than the one disclosed in the paragraph above, is characterized in that the composition contains, based on the total weight of the cosmetic composition,

a) 1.5% to 3.5% by weight, preferably 1.9% to 3.1% by weight glycerol

b) 7.5% by weight to 12% by weight, preferably 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is preferred,

c) 0.25% to 0.6% by weight of at least one polysaccharide selected from methyl

cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, hydroxypropylmethyl cellulose, hydroxypropylethyl cellulose, hydroxyethylmethyl cellulose and

carboxymethyl cellulose,

d) at least one quaternary ammonium compounds selected from the group consisting of palmitamidopropyltrimonium chloride, behenamidopropylethyldimonium ethosulfate, stearamidopropyltrimonium methosulfate and undecylamidopropyltrimonium methosulfate, and

e) Laureth-7 Citrate as anionic surfactant.

Still another specific cosmetic composition according to the second preferred embodiment of the present invention, which is even more preferred than the one disclosed in the paragraph above, is characterized in that the composition contains, based on the total weight of the cosmetic composition,

a) 1.5% to 3.5% by weight, preferably 1.9% to 3.1% by weight glycerol

b) 7.5% by weight to 12% by weight, preferably 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is preferred,

c) 0.25% to 0.6% by weight hydroxyethyl cellulose

d) at least one quaternary ammonium compound selected from the group consisting of palmitamidopropyltrimonium chloride, behenamidopropylethyldimonium ethosulfate, stearamidopropyltrimonium methosulfate and undecylamidopropyltrimonium methosulfate, and

e) Laureth-7 Citrate as anionic surfactant, wherein the ratio by weight between the cationic surfactants d) and the anionic surfactant e) is in the range from 3:1 to 1 :3, more preferred in the range from 2:1 to 1 :2.5 and most preferred in the range from 1.2:1 to 1 :2.

Still another specific cosmetic composition according to the second preferred embodiment of the present invention, which is even more preferred than the one disclosed in the paragraph above, is characterized in that the composition contains, based on the total weight of the cosmetic composition,

a) 1.9% to 3.1% by weight glycerol

b) 9% to 1 1% by weight of at least one antiperspirant active ingredient selected from the group consisting of aluminum chlorohydrate and aluminum sesquichlorohydrate, whereby aluminum chlorohydrate is preferred,

c) 0.3% to 0.48% by weight hydroxyethyl cellulose.

d) at least one quaternary ammonium compound selected from the group consisting of palmitamidopropyltrimonium chloride, behenamidopropylethyldimonium ethosulfate, stearamidopropyltrimonium methosulfate and undecylamidopropyltrimonium methosulfate, and

e) Laureth-7 Citrate as anionic surfactant,

wherein the ratio by weight between the cationic surfactants d) and the anionic surfactant e) is in the range from 1.2:1 to 1 :2 and wherein the cosmetic composition is characterized that the composition contains only one phase.

Examples:

The following examples should illustrate the compositions of this invention, without intending to limit the invention to these examples. The numerical values in the examples are percentages by weight, based on the total weight of the preparations.

In order to provide an indication of the beneficial aspects of the present invention a set of comparative studies have been carried out by the applicant. All investigated example compositions are presented in the following tables.

The stickiness of the cosmetic compositions was evaluated in the following manner:

i) Circles with 2 cm diameter were marked on the forearms of each participant taking part in the study.

ii) Per marked section on the forearm 25 pg of one of the composition listed in the following table was applied. iii) The compositions were evenly spread with a finger to form an evenly spread layer in the marked section. Then the stickiness of the compositions were evaluated by continuous repetition of pressing the fingertip onto the skin and removing the finger from the skin until the skin feels dry.

iv) The stickiness of the compositions was compared and rated in reference to each other.

Com = Comparative example, not according to the invention

Inv = Inventive example, according to the invention

* ImerCare 400D

* ^* Mirasil CM5