[0001] The invention refers to antiperspirant deodorant gel, which is a cosmetic personal care product containing active antiperspirant and deodorant ingredients and is intended to protect the skin from irritation by preventing and/or eliminating the unpleasant odour caused by sweating.

BACKGROUND OF THE INVENTION

[0002] The skin is an anatomical organ, an external body covering. The main functions of the skin are to protect the body from mechanical effects, pathogens and excessive water loss. It also serves for thermal insulation, temperature regulation, and as a receptor of some senses. The skin has a number of important features such as:

- protective function - the skin covers the entire body and protects it from

- vapor control - the skin provides a relatively dry and semipermeable barrier to reduce fluid losses.

[0003] Sometimes sweat is a good environment for the development of microorganisms and fungi. The observance of personal hygiene reduces their prevalence. Fungous (mycotic) infection occurs when swimming in pools with contaminated water, using common towels, clothes, shoes, etc. The skin is made of two main layers - epidermis and derma. Dermis and epidermis contain a number of nerve endings, through which the human organism constantly receives information about changes in the external environment. [0004] An important factor in the process of thermoregulation is the activity of fat and sweat glands. Sweat glands are located all over the body but mostly in the palms, feet, groin and armpits. They are tubes with one end coiled up in the dermis and the other ending on the surface of the skin, in the so called sweat pore. The secretion they release (sweat) contains water and dissolved salts (NaCl), end products from metabolism, e.g. urea, amines, mercaptans, etc. Sweat has an acidic reaction.

As a result of the bacterial decomposition of the normal human microflora, the odour of the sweat becomes even more unpleasant.

[0005] Sebaceous glands are located all over the skin except for the feet and palms. Fat cells of the sebaceous glands are filled with oil droplets, which are enlarged, merged and pushed towards the periphery of the cell.

These fat cells disintegrate and the resulting oily secretion (sebum) is poured into the hair channel and then rises onto the skin surface. The odour of sebum is determined by its composition (saturated and unsaturated free fatty acids, triglycerides, waxes, cholesterol and the esters thereof, etc.). As a result of the environment and the presence of enzymes, oxidation breakdown (lipidation) of the lipid components on the skin occurs and an unpleasant odour is formed.

[0006] Antiperspirants and deodorants are popular personal care products used to prevent or eliminate sweat and organic smell caused by sweat separated through the skin.

Antiperspirants typically prevent sweat by blocking or obstructing the sweat secretion glands, e.g. those located in the armpits. Deodorants counteract or mask unwanted odours caused by bacterial flora in the secreted sweat.

[0007] In order to act as effective inhibitors of armpit sweating, antiperspirant salts are usually included in antiperspirant products at relatively high concentrations. These water-soluble salts are generally sticky in concentrated solutions, as they dry out and thus create an unpleasant feeling of stickiness in the armpits.

[0008] Cosmetic manufacturers offer various forms of products designed to actively counteract perspiration, e.g. a variety of deodorants being provided in the form of powders, aerosol sprays, sticks, gels and emulsions. [0009] To date, a variety of products have been developed, the composition of which is focused on the sole purpose of dealing with the already described issues as a result of sweat. For example, the problem with the stickiness is largely overcome with a product made as a solid oily stick that can be rubbed in the area of the armpits.

[0010] These products are not unanimously accepted by consumers as they tend to leave a white powder upon drying. It is particularly difficult to overcome stickiness when using products containing water-in-oil antiperspirant salt suspensions.

[0011] There is a known patent publication US20140186412 (priority 28.12.2012) describing a cosmetic antiperspirant product, which can be differently formulated, for example a solid product, an aerosol spray, a roller deodorant, or a cleaning stick.

The active ingredient contained in the product is aluminium zirconium trichlorohydrex - gly in the amount of 5-25%, as well as other ingredients such as stabilizers, emollients, preservatives, perfumes.

[0012] The description of the abovementioned patent publication shows exemplary compositions in which, irrespective of the product formulation, at least one active ingredient or active antiperspirant compound is contained that usually includes metal salts. It is assumed that the presence of metal salts may lead to reduced sweating, mainly due to diffusion of the occipital and apocrine glands through the sweat channels and hydrolysis in the sweat channels.

[0013] Studies have shown that metal salts are combined with proteins to form amorphous metal hydroxide agglomerate that remains in the sweat channels so that sweat cannot spread to the skin surface. Some active antiperspirant compounds that can be used include astringent metal salts such as inorganic and organic aluminium, zirconium and zinc salts, as well as their mixtures.

[0014] Thus, there is a need to provide antiperspirant compositions, which include suspensions and show adequate antiperspirant efficacy without thereby creating a sense of stickiness in the consumer. SUMMARY OF THE INVENTION

[0015] In view of the current level of technology in the subject area as described above, the invention is designed to provide an antiperspirant deodorant gel ensuring an extended skin protection by preventing or completely eliminating the unpleasant odour caused by sweating, while significantly reducing traces on the skin and clothing, as well as reducing the effect of the product on the colouring of the clothes.

[0016] The aim will be accomplished by providing a cosmetic formulating of deodorant gel containing the active substance aluminium zirconium octachlorohydrex gly and zinc ricinoleate, as well as accompanying ingredients such as stabilizers, emollients, preservatives, perfume flavours.

[0017] According to the invention, the cosmetic composition contains an antiperspirant selected from the group of aluminium zirconium octachlorohydrex glicin complex, in an amount of aluminium zirconium octachlorohydrex from 8.15 - 28.75%, zinc ricinoleate 0.125 - 0.486%, glycine - 0.6 - 4.0%, tetrasodium glutamate diacetate - 0.110 - 0.495%, propanediol 0.01 - 2.00%, propylene glycol 5 - 25%, organic acid, preferably lactic acid 0.10 - 0.40 %, polyethylene glycol, polypropylene glycol dimethicone -0.85 - 3.5% and dimethicone - 0.8 - 2.5%, dimeticon -10-12%, perfume 0.10 - 1.00%, benzyl alcohol - 0.20 - 1.00 %, PEG - 40 hydrogenated castor oil 0.50 - 2.00 % and water - up to 100%

[0018] According to the invention, the aluminium zirconium octachlorohydrex gly is preferably in an amount of 10 - 25%, even more preferably 13 - 22%, even more preferably 16 - 19%.

[0019] According to the invention, the zinc ricinoleate is preferably in an amount of 0.18 - 0.42, even more preferably from 0.25 - 0.37%, and even more preferably from 0.30 - 0.34%.

[0020] In the gel deodorant antidepressant, proposed herein preferably a polymer complex is used which contains a dominant antiperspirant and is used in many deodorants. The aluminium zirconium octachlorohydrex can be introduced by the aluminium zirconium octachlorohydrex gly complex comprising aluminium zirconium octachlorohydrex gly, aqua and glycine. Its effect is mainly to reduce the ecstatic sweat on the surface of the skin. As a result of the property of the adstringent substances to precipitate proteins, there is a contraction of the pores on the surface of the skin. Anhydrous aluminium zirconium octalorhydrex gly functions through diffusion in the sweat glands and formation of a colloidal plug that limits the flow of sweat to the surface of the skin.

The plug gradually breaks and normal sweating resumes. Sweat movement is limited, it is collected into channels and sweat gland activity is weakened. As a result, astringent substances interact with surface proteins without penetrating into the skin.

[0021] It is assumed that reduction in sweaty secretion to 60% does not have a detrimental effect on the normal health of the body.

[0022] The proposed composition also includes glycine that is used by the body to produce proteins while also contributing to the transmission of chemical signals to the brain, thus affecting the fluid flow (water, sweat, lymph, blood) in the body.

[0023] To improve the efficiency of the deodorant gel subject to the invention, it is suitable to include a chemical neutralizer for the unpleasant odorants, such as a combination of zinc ricinoleate, tetrasodium glutamate diacetate, propanediol, and aqua. Zinc ricinoleate is surface-stabilized (skin, antiperspirant) and can quickly and easily absorb molecules with unpleasant odour from the gas phase. The gas phase is formed by gases discharged during the decomposition of sweat and "breathing" of the skin and has an unpleasant odour.

[0024] Organic acids selected from the group of citric, malic, benzoic, salicylic acid, preferably lactic acid, which action is due to their interaction with the skin proteins, are used as astringent substances. Lactic acid is used in the proposed composition primarily to adjust the pH and to stabilize the composition. At the same time, the presence of lactic acid in the specified range significantly reduces the formation of yellow spots on the tissues. This is alpha-hydroxy acid with low irritancy compared to other acids but in fact it is equally effective.

[0025] Lactic acid has a hydrating and pH-regulating effect and thus inhibits the growth of foreign microorganisms on the skin. It is also part of the natural moisturizing system and the acid mantle of the skin and thus regulates the pH and bacterial colonization of the skin physiologically. [0026] The benzyl alcohol added is essentially a booster for inhibiting bacterial colonization of the skin. As an aromatic substance, it gives an excellent opportunity to obtain a complex of antimicrobial and perfume effect without further prominent bactericidal activity. Thus, overdosage can be avoided in the daily use of the product on the skin, and this is important to preserve its natural biological balance and to obtain quite a lesser number of resistant microbes. This property is an advantage, that allows the amount of perfume to be reduced and minimizes the likelihood of skin allergies. The formulation demonstrates the ability of a combination of silicone emulsifier, antiperspirant complex and dimethicone to facilitate transfer resistance. Silicone film forming materials also have shown dual function, also enhancing the sensory attributes.

[0027] Linear dimethicone is used as a solvent and softening agent, the chain is modified in the a- and ω-C polyether position. The length of the dimethicone and polyether composition chain is optimized to provide a silky feel and good emulsifying properties.

Due to its structure, it demonstrates excellent compatibility with silicone oils and liquids, as well as other typical non-silicone emollients such as esters, ethers or carbonates

[0028] Antiperspirant formulations based on polyethylene glycol, polypropylene glycol, dimethicone, and dimethicone provide rapid release of active ingredients from W/O or water-silicone (W/Si) emulsion. The rapid release of AP-active from based emulsions is documented by a simple test procedure: 5% of the antiperspirant emulsion (water-silicone emulsion) is dispersed in 95% water and maintained by stirring. The amount of active antiperspirant substance released in the aqueous phase of dispersion after 5 min, 1 h and 24 h of stirring is shown on shown in the below table.

[0029] On Fig. 1. the formula based on the antiperspirant formulations shows, for comparison purposes, a much slower release of the AP-active substance in this test.

In AP/Deo formulations based on a combination of the antiperspirant formulations ensures better release. It should be noted that propylene glycol is used in the above formula as a useful polyhydric alcohol. In addition to being used as humectant and solubilizer, it also helps to compare the refractive index of the two phases in order to obtain a clear emulsion.

PRIMERY EMBODIMENT OF THE INVENTION

[0030] The gel deodorant, objecy of the invention be clarified in further detail by showing an example of its composition, not limited to the example below and is for illustration only.

All rates in the description and the following claims are shown as percentage by weight.

[0031] Example 1.

Deodorant gel Composition in percentage by weight % aluminium zirconium octachlorohydrex gly 17.82 %, glycine 1 -62 % propylene glycol 15.00 % polyethylene glycol, polypropylene glycol, dimethicone 2.5 % dimethicone 1.25 % dimethicone 10.00 % lactic acid 0.200 % zinc ricinoleate 0.315 % tetrasodium glutamate diacetate 0.195 %

propanediol 0.06 % benzyl alcohol 0.60 %

PEG-40 hydrogenated castor oil 1.00 % perfume 0.70 % water up to 100 %

[0032] Method of preparation of a gel formulation of the deodorant according to the utility model.

The composition described above, in particular the water-in-oil emulsion, is prepared in the following order: a) mixing of the components propylene glycol, aluminium zirconium octachlorohydrex gly, glycine and water - Phase A b) the components of polyethylene glycol, polypropylene glycol, dimethicone and dimethicone are mixed in a separate container - Phase B c) compliance of the Phase B and Phase A refractive indices is performed, then Phase A is added to Phase B very slowly, while maintaining turbulent mixing; Mix at a high shear rate and high speed for 3-5 minutes after mixing to homogenizating and obtaining a clear gel.

d) addition of the Phase C components - lactic acid, zinc ricinoleate and tetrasodium glutamate diacetate propanediol, benzyl alcohol, PEG-40 hydrogenated castor oil, perfume, water, followed by homogenization.