Keratinous skincare composition and mask containing it

Abstract

The present invention relates to a keratin treatment composition comprising (i) at least one neutralized acrylic polyacid; (ii) at least one polymer comprising at least one monomer of 2-acrylamido-2-methylpropanesulfonic acid; (iii) at least one polyoxybutylene, polyoxyethylene, polyoxypropylene, or glycerol; and (iv) at least one C2-C4 polyol, wherein the composition does not comprise more than 1% of a diol containing five or more carbon atoms and a preservative. The present invention also relates to a non-therapeutic process for the treatment of keratinous materials, comprising the application of said composition to the keratinous materials. Figure for abstract: none

Description

Description Title of the invention: MATERIAL CARE COMPOSITION KERATINOUS AND MASK CONTAINING IT Technical field

[0001] The present invention relates to a care composition for keratinous materials and a mask containing it. The present invention also relates to a non-process therapeutic treatment of keratinous materials. RELATED ART

[0002] — The skin is the protective barrier of the human body. It protects the inside of the body against physical injuries (such as trauma) and biological injuries (such as those caused by bacteria, viruses or fungi). The epidermis is a keratinized stratified squamous epithelium. Its average thickness ranges from 60 to 100 µm and can reach 600 to 700 um on the soles of the feet and the palms of the hands. It composed mainly of keratinocytes, but also of other cells, and is based on a basement membrane that separates it from the dermis.

[0003] During menopause, the skin undergoes changes in all its compartments, know: dermal and epidermal. The development of formulas dedicated to the care of the skin is permanent.

[0004] = The ultimate goal of cosmetic formulation has always been to offer consumers of highly effective products with cosmetic properties such as hydration, humidification, whitening, et cetera.

[0005] — Among all skin care compositions, masks are known to have high effectiveness on the skin. Therefore, there has been a growth in the market for cosmetic products for masks.

[0006] — Classically, masks are grouped into three main categories: fabric masks, the dominant and most developed category; masks without rinse-free fabric, such as sleep masks used at night; and face masks rinse without fabric, such as clay mask intended to cleanse the skin.

[0007] Efforts have been made to formulate skin care mask compositions skin, with a soft skin feeling after application. In particular, the amount of preservatives has been reduced in order to obtain mild cosmetic mask products.

[0008] To this end, sterilization procedures have been implemented during the pre- preparation of these compositions. We can mention sterilization processes classified only available such as heat sterilization.

[0009] = However, many cosmetic compositions do not tolerate sterilization at heat. For example, a composition comprising diol containing 5 atoms of carbon or more can provide stability and good feeling after sterilization, however there will be bad smell due to sterilization at higher temperature. Therefore, there is still a need to formulate a skin care composition, which is stable and can provide a good feeling to the skin and does not have a bad odor after heat sterilization. Summary of the invention Inventors have now discovered that it is possible to formulate skin care compositions that are stable and can provide a good feeling to the skin and do not have a bad odor after heat sterilization. Accordingly, in a first aspect, the present invention provides a composition for caring for keratinous materials, comprising: (i) at least one polyacrylic acid salt; (ii) at least one polymer comprising at least one 2-acrylamido-2-methylpropanesulfonic acid monomer; (iii) at least one polyoxybutylene polyoxyethylene polyoxypropylene glycerol; and (iv) at least one C2-C4 polyol; wherein the composition comprises not more than 1% of a diol containing 5 or more carbon atoms and a preservative. The composition according to the present invention is stable and can provide a good feeling without bad odor after heat sterilization. In a second aspect, the present invention provides a keratinous material care mask, comprising: A) a water-insoluble mask fabric, and B) the composition according to the present invention impregnated into the mask fabric. The composition or mask of the present invention can provide a moisturizing effect to the skin. In a third aspect, the present invention provides a non-therapeutic process for caring for keratinous materials, comprising applying the composition according to the first aspect of the present invention to the keratinous materials. In the fourth aspect, the present invention provides a non-therapeutic process for caring for keratinous materials, comprising the following steps: (i) application of the mask according to the present invention to keratinous materials; (ii) leaving the mask on the keratinous materials for a certain time; and (iii) removal of the mask of keratinous materials. Other advantages of the present invention will become more apparent upon reading the description and examples which follow. DETAILED DESCRIPTION OF THE INVENTION Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the field to which the present invention pertains. Where the definition of a term in the present invention conflicts with the meaning commonly understood by those skilled in the art in the field to which the present invention pertains, the definition described in the present invention shall apply. In the following and unless otherwise indicated, the limits of a range of values ​​are included in this range, in particular in the expressions "between...and..." and "from...to > Furthermore, the expression "at least one" used in this description is equivalent to the expression "one or more". Throughout this application, the term "comprising" is to be interpreted as encompassing all specifically mentioned features as well as optional, additional, and unspecified features. As used herein, the term "comprising" also refers to the embodiment in which no features other than the specifically mentioned features are present (i.e., "consisting of"). Unless otherwise indicated, all numerical values ​​expressing an amount of ingredients and the like that are used in the description and claims are to be understood as being modified by the term "about". Therefore, unless otherwise indicated, the numerical values ​​and parameters described herein are approximate values ​​that may be modified depending on the intended purpose, if necessary. For the purposes of the present invention, the term "keratinous material" is intended to cover human skin. Facial skin is particularly considered according to the present invention. In the present invention, all percentages refer, unless otherwise indicated, to a weight percentage. Polyacrylic acid salts According to the first aspect, the composition of the present invention comprises at least one polyacrylic acid salt. Polyacrylic acid salts suitable for use in the present invention include, but are not limited to, polyacrylic acid metal salts. The salt of polyacrylic acids can be partially or completely neutralized. The acrylic monomers of the polyacrylic acid salts according to the invention can be neutralized in a proportion of 90% to 100%. Examples include the sodium, potassium, lithium, and ammonium salts of polyacrylic acid. The most preferred salt of polyacrylic acid is sodium polyacrylate. Sodium polyacrylates are acrylic homopolymers in partially or fully neutralized form, and they are hydrophilic. According to the invention, the term "hydrophilic polymer" designates a non-amphiphilic polymer which is soluble and dispersible in water. In a preferred embodiment, said polyacrylate is sodium polyacrylate designated by the CAS number 9003-04-7. Sodium polyacrylate is for example marketed by Sigma-Aldrich, or COSMEDIA SP sold by the company BASF. Sodium polyacrylate sold under the name Cosmedia SP® contains 90% solids and 10% water. Advantageously, the polyacrylic acid salt is present in the composition according to the present invention in an amount ranging from 0.01% by weight to 5% by weight, preferably from 0.1% by weight to 2% by weight, more preferably from 0.2% by weight to 0.5% by weight, relative to the total weight of the composition. Advantageously, the polyacrylic acid salt is present in the composition according to the invention in an amount greater than or equal to 0.1% by weight, preferably greater than or equal to 0.3% by weight relative to the total weight of the composition. Polymer(s) According to the first aspect, the composition of the present invention comprises at least one polymer comprising at least one monomer which is acrylamido-2-methylpropanesulfonic acid (AMPS®) (or AMPS® polymers), In particular, the AMPSS polymers according to the invention are crosslinked or non-crosslinked homopolymers or copolymers comprising at least the monomer acrylamido-2-methylpropanesulfonic acid (AMPS®), in a form partially or totally neutralized with a mineral base other than ammonia, such as sodium hydroxide or potassium hydroxide. They are preferably completely neutralized or almost completely neutralized, i.e. at least 90% neutralized. These AMPS® polymers according to the invention can be crosslinked or not crosslinked. When the polymers are crosslinked, the crosslinking agents may be chosen from polyolefinically unsaturated compounds commonly used for crosslinking polymers obtained by radical polymerization. Examples of crosslinking agents that may be mentioned include divinylbenzene, diallyl ether, dipropylene glycol diallyl ether, polyglycol diallyl ethers, triethylene glycol divinyl ether, hydroquinone diallyl ether, ethylene glycol or tetraethylene glycol di(meth)acrylate, trimethylolpropane triacrylate, methylenebis- acrylamide, methylenebismethacrylamide, triallylamine, triallyl cyanurate, diallyl maleate, tetraallylethylenediamine, tetraallyloxyethane, trimethylolpropane diallyl ether, allyl (meth)acrylate, allyl ethers of sugar alcohols, or other allyl or vinyl ethers of polyfunctional alcohols, as well as allyl esters of phosphoric and / or vinylphosphonic acid derivatives, or mixtures of these compounds. According to a preferred embodiment of the invention, the crosslinking agent is chosen from methylenebis-acrylamide, allyl methacrylate or trimethylolpropane triacrylate (TMPTA). The crosslinking rate generally ranges from 0.01 mol% to 10 mol% and more particularly from 0.2 mol% to 2 mol% relative to the polymer. The AMPS® polymers according to the present invention are water-soluble or water-dispersible. In this case, they are: - “homopolymers” comprising only AMPS® monomers and, if crosslinked, one or more crosslinking agents such as those defined above; - or "copolymers" obtained from AMPSS and one or more hydrophilic or hydrophobic ethylenically unsaturated monomers and, if crosslinked, one or more crosslinking agents such as those defined above. When said copolymers comprise ethylenically unsaturated hydrophobic monomers, these monomers do not comprise a fatty chain and are preferably present in small amounts. For the purposes of the present invention, the term “fatty chain” means any hydrocarbon chain containing at least 7 carbon atoms. The term "water-soluble or water-dispersible" means polymers which, when introduced into an aqueous phase at 25°C, at a mass concentration equal to 1%, make it possible to obtain a macroscopically homogeneous and transparent solution, i.e. a solution having a maximum light transmittance value, at a wavelength equal to 500 nm, through a sample 1 cm thick, of at least 60% and preferably at least 70%. The "homopolymers" according to the invention are preferably crosslinked and neutralized, and they can be obtained according to the preparation process comprising the following steps: (a) the monomer such as AMPS® in free form is dispersed or dissolved in a solution of tert-butanol or water and tert-butanol; (b) the monomer solution or dispersion obtained in (a) is neutralized with one or more mineral or organic bases, preferably ammonia NH, in an amount making it possible to obtain a degree of neutralization of the sulfonic acid functions of the polymer ranging from 90% to 100%; (c) the crosslinking monomer(s) is (are) added to the solution or dispersion obtained in (b); (d) standard free radical polymerization is carried out in the presence of free radical initiators at a temperature ranging from 10 to 150 °C; the polymer precipitates from the tert-butanol-based solution or dispersion. The AMPS® homopolymers according to the invention are preferably homopolymers of 2-acrylamido-2-methylpropanesulfonic acid optionally crosslinked and / or neutralized, for example poly(2-acrylamido-2-methylpropanesulfonic acid) sold by the company Clariant under the name Hostacerin AMPS®% (CTFA name: ammonium polyacryldimethyltauramide). The water-soluble or water-dispersible AMPS copolymers according to the present invention preferably contain water-soluble ethylenically unsaturated monomers, hydrophobic monomers or mixtures thereof. Water-soluble comonomers can be ionic or non-ionic. Among the ionic water-soluble comonomers, examples that may be cited include the following compounds and their salts: - (meth)acrylic acid, - styrene sulfonic acid, - vinylsulfonic acid and (meth)allylsulfonic acid, - vinylphosphonic acid, - maleic acid, - itaconic acid, - crotonic acid, - water-soluble vinyl monomers of formula (A) below: H:C=CR- (HAS) co Xi in which: - R, is chosen from H, -CHz, -C,H; and -C:Hy - X, is chosen from: - alkyl ethers of type- OR: in which Rz is a linear or branched, saturated or unsaturated hydrocarbon radical, containing from | to 6 carbon atoms, substituted by at least one sulfonic group (-SO;-) and / or sulfate (-SO--) and / or phosphate (-PO4H--). Examples of non-ionic water-soluble comonomers include: - (meth)acrylamide, - N-vinylacetamide and N-methyl-N-vinylacetamide, - N-vinylformamide and N-methyl-N-vinylformamide, - maleic anhydride, - vinylamine, - N-vinyllactams comprising a cyclic alkyl group containing from 4 to 9 carbon atoms, such as n-vinylpyrrolidone, N-butyrolactam and N-vinylcaprolactam, - vinyl alcohol of formula CH,=CHOH, - water-soluble vinyl monomers of formula (B) below: H:C=CR-5 {tB) co X in which: - Rys is chosen from H, -CHz, -C,H; and -C,H, - X, is chosen from: - alkyl ethers of type -ORy5 where Ry5 is a linear or branched, saturated or unsaturated hydrocarbon radical containing from 1 to 6 carbons, optionally substituted by a halogen atom (iodine, bromine, chlorine or fluorine); a hydroxyl group (-OH); ether. Examples include glycidyl (meth)acrylate, hydroxyethyl methacrylate and ethylene glycol, diethylene glycol or polyalkylene glycol (meth)acrylates. Examples of hydrophobic comonomers without a fatty chain include: -styrene and its derivatives, such as 4-butylstyrene, œ&-methylstyrene and vinyltoluene, - vinyl acetate of formula CH,=CH-OCOCH:; - vinyl ethers of formula CH:=CHOR in which R is a linear or branched, saturated or unsaturated hydrocarbon radical containing from 1 to 6 carbons; - acrylonitrile, - caprolactone, - vinyl chloride and vinylidene chloride, - silicone derivatives, which lead to silicone polymers after polymerization, such as methacryloxypropyltris(trimethylsiloxy)silane and silicone methaerylamides, - the hydrophobic vinyl monomers of formula (C) below: HC=CR>a tC) co Xa in which: - R»; is chosen from H, -CH;, -C,H; and -C,H;, - X; is chosen from: - alkyl ethers of type -OR3, in which R»4 is a linear or branched, saturated or unsaturated hydrocarbon radical containing from 1 to 6 carbon atoms. Examples include methyl methacrylate, ethyl methacrylate, n-butyl (meth)acrylate, tert-butyl (meth)acrylate, cyclohexyl acrylate, isobornyl acrylate and 2-ethylhexyl acrylate. The water-soluble or water-dispersible AMPS® polymers of the invention preferably have a molar mass ranging from 50,000 g / mol to 10,000,000 g / mol, preferably from 80,000 g / mol to 8,000,000 g / mol and even more preferably from 100,000 g / mol to 7,000,000 g / mol. Examples of water-soluble or water-dispersible AMPS homopolymers according to the present invention that may be cited include crosslinked or non-crosslinked polymers of sodium acrylamido-2-methylpropanesulfonate, such as the polymer used in the commercial product Simulgel 800 (CTFA name: Sodium Polyacryloyldimethyltaurate). Examples of water-soluble or water-dispersible AMPS copolymers according to the present invention that may be cited include: - crosslinked acrylamide / sodium acrylamido-2-methylpropanesulfonate copolymers, such as the copolymer used in the commercial product Sepigel® 305 (CTFA name: Polyacrylamide / C,;-C;; Isoparaffin / Laureth-7) or the copolymer used in the commercial product sold under the trade name Simulgel 600 (CTFA name: Acrylamide / Sodium Acryloyldimethyltaurate / Isohexadecane / Polysorbate-80) by the company SEPPIC: - copolymers of AMPS and vinylpyrrolidone or vinylformamide, such as the copolymer used in the commercial product sold under the name Aristoflex® by the company Clariant (CFTA name: Ammonium acryloyldimethyltaurate / VP Copolymer) but neutralized with sodium hydroxide or potassium hydroxide; - copolymers of AMPS and sodium acrylate such as, for example, the copolymer of AMPS / sodium acrylate such as the copolymer used in the commercial product sold under the name Simulgel EG by the company SEPPIC (CTFA name: Acrylamide / Sodium Acryloyldimethyltaurate / [sohexadecane / Polysorbate-80); - copolymers of AMPS and hydroxyethyl acrylate, for example the AMPS / hydroxyethyl acrylate copolymer such as the copolymer used in the commercial product sold under the name Simulgel“ NS by the company SEPPIC (CTFA name: Hydroxyethyl acrylate / Sodium Acryloyldimethyltaurate copolymer (and) Squalane (and) Polysorbate-60). Preferred polymers are more particularly homopolymers of sodium acrylamido-2-methylpropanesulfonate, such as the homopolymer used in the commercial product Sepigel 800, and copolymers of AMPS® / hydroxyethyl acrylate, such as the copolymer used in the commercial product sold under the name Simulgel NS. According to a particularly preferred form of the invention, the AMPS® polymer or copolymer will be used in powder form. AMPS-derived polymers may further be those comprising: - from 80 mol% to 99 mol% of acid units 2-acrylamido-2-methylpropanesulfonic acid (AMPS®) of formula (D) below: (D) THIS GR CH, 8 NH— —ETRRRS x* CH, in which X* is a proton, an alkali metal cation, an alkaline earth metal cation or an ammonium ion; and - 1 mol% to 20 mol% and preferably 1 mol% to 15 mol% of units of formula (E) below: (E) R | 1 —CH, 47 co -R2 0 CH2OE C)-(CH,CHE tu H,C O-(C in which n and p, independently of each other, denote a number of moles and range from 0 to 30 and preferably from 1 to 20, provided that n + p is less than or equal to 30, preferably less than 25 and better still less than 20; R, denotes a hydrogen atom or a linear or branched C,-C alkyl radical (preferably methyl) and R, denotes a linear or branched alkyl comprising m carbon atoms, with m ranging from 6 to 30 and preferably from 10 to 25. These polymers according to the invention can be obtained according to conventional processes of free radical polymerization in the presence of one or more initiators such as, for example, azobisisobutyronitrile (AIBN), azobisdimethylvaleronitrile, 2,2-azobis[2-amidinopropane] hydrochloride (ABAH = 2,2-azoBis-[2-Amidinopropane] hydrochloride), organic peroxides such as dilauryl peroxide, benzoyl peroxide, tert-butyl hydroperoxide, etc., inorganic peroxide compounds such as potassium persulfate or ammonium persulfate, or H,O, optionally in the presence of reducing agents. Polymers are obtained in particular by free radical polymerization in a tert-butanol medium from which they precipitate. By using polymerization in tert-butanol, it is possible to obtain a size distribution of the polymer particles which is particularly favorable for its uses. The polymerization reaction can be carried out at a temperature between 0 and 150 °C, preferably between 20 and 100 °C, either at atmospheric pressure or at reduced pressure. It can also be carried out under an inert atmosphere, and preferably under nitrogen. It is thus possible to use polymers prepared from 2-acrylamido-2-methylpropanesulfonic acid (AMPS®), or a sodium or ammonium salt thereof, with a (meth)acrylic acid ester and: of a Cio-C3 alcohol oxyethylenated with 8 mol of ethylene oxide (Genapol C-080P from Clariant), of a C, oxo alcohol, oxyethylenated with 8 mol of ethylene oxide (Genapol UD-080 ® from Clariant), of an oxo alcohol Ç,, oxyethylenated with 7 mol of ethylene oxide (Genapol UD-070® from Clariant), of a C12-C4 alcohol Oxyethylenated with 7 mol of ethylene oxide (Genapol LA-070 ® from Clariant), of a C17-C4 alcohol oxyethylenated with 9 mol of ethylene oxide (Genapol LA-090 ® from Clariant), of a C,7-C,4 alcohol oxyethylenated with 11 mol of ethylene oxide (Genapol LA- 110€ from the company Clariant), of an alcohol in Cy6-Cys Oxyethylenated with 8 mol of ethylene oxide (Genapol T-080® from Clariant), of an alcohol in Cy6- Cyg Oxyethylenated with 11 mol of ethylene oxide (Genapol T-110 ® from Clariant), of a C16-C1s alcohol oxyethylenated with 15 mol of ethylene oxide (Genapol T-150 © from Clariant), of a C16-C1s alcohol oxyethylenated with 20 mol of ethylene oxide (Genapol T-200 ® from Clariant), of a C16-Cyg alcohol oxyethylenated with 25 mol of ethylene oxide (Genapol T-250 ® from Clariant), of a C,3-C» alcohol oxyethylenated with 25 mol of ethylene oxide, of a Cy6-C;2 isoalcohol Oxyethylenated with 25 mol of ethylene oxide. According to a preferred embodiment, the polymer is an AMPS® copolymer of a C,5-C,3 alcohol methacrylate comprising from 6 to 25 mol of oxyethylene groups, obtained from methacrylic acid or a salt of methacrylic acid and a C,5-C,3 alcohol oxyethylenated with 6 to 25 mol of ethylene oxide. The polymer may also be a copolymer of AMPS® and a C,2-C,4 alcohol methacrylate comprising from 6 to 25 mol of oxyethylene groups, obtained from methacrylic acid or a salt of methacrylic acid and a C,2-C,4 alcohol oxyethylenated with 6 to 25 mol of ethylene oxide. As preferred AMPS® type polymers according to the present invention, mention may be made of: the non-crosslinked copolymer obtained from 92.65 mol% of AMPS® and 7.35 mol% of a C,6-C13 alcohol methacrylate comprising 8 oxyethylene groups (Genapol T-0808), the non-crosslinked copolymer obtained from 91.5 mol% of AMPS® and 8.5 mol% of a C,2-C,4 alcohol methacrylate comprising 7 oxyethylene groups (Genapol LA-0708), the crosslinked copolymer obtained from 96.45 mol% of AMPS® and 3.55 mol% of a C,6-C,3 alcohol methacrylate comprising 25 oxyethylene groups (Genapol T- 2506), the crosslinking agent is trimethylolpropane triacrylate, the crosslinked copolymer obtained from AMPS® and a C2 alcohol methacrylate comprising 25 oxyethylene groups; this polymer is sold under the name Aristoflex HMB® by the company Clariant, acrylamide / 2-methyl-2-[(1-oxo-2-propenyl)amino] copolymer Sodium 1-propanesulfonate (AMPS®) such as Simulgel 600® in the form of an emulsion containing polysorbate 80 as surfactant and containing isohexadecane as fatty phase, sold by the company SEPPIC, or as a variant Simulgel EG®, Simulgel A® and Simulgel 501 sold by the same company. Simulgel 600$ is described in particular in document FR 2 785 801. It is more specifically an inverse latex. The AMPSS® polyelectrolyte is 2-methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid partially or totally salified in particular in the form of sodium salt or ammonium salt, in a proportion of 30% by mol to 50% by mol in the mixture comprising AMPS® and an acrylamide, itself in a proportion of 50% to 70%. For the purposes of the present invention, the preferred polymers derived from AMPS® are the optionally crosslinked and / or neutralized homopolymers of 2-acrylamido-2-methylpropanesulfonic acid, for example poly(acid 2-acrylamido-2-methylpropanesulfonic acid) sold by the company Clariant under the name Hostacerin AMPS® (CTFA name: ammonium polyacryldimethyltauramide). Advantageously, the polymer comprising at least one 2-acrylamido-2-methylpropanesulfonic acid monomer is present in the composition according to the present invention in an amount ranging from 0.01% by weight to 5% by weight, preferably from 0.1% by weight to 3% by weight, more preferably from 0.2% by weight to 1% by weight, relative to the total weight of the composition. Advantageously, the polymer comprising at least one 2-acrylamido-2-methylpropanesulfonic acid monomer is present in the composition according to the invention in an amount greater than or equal to 0.1% by weight, preferably greater than or equal to 0.3% by weight relative to the total weight of the composition Polyoxybutylene polyoxyethylene polyoxypropylene glycerol According to the first aspect, the composition of the present invention comprises at least one polyoxybutylene polyoxyethylene polyoxypropylene glycerol. Polyoxybutylene polyoxyethylene polyoxypropylene glycerol can be represented by the formula (I) below: Gly-{O(PO).(EO)-(BO)H}; (D in which Gly denotes a residue obtained by removal of hydroxyl groups from glycerin; PO denotes an oxypropylene group; FO denotes an oxyethylene group; s and t denote the average mole numbers of addition of PO and EO, respectively, and have a value ranging from 1 to 50; the PO to EO weight ratio (PO / EO) ranges from 1 / 5 to 5 / 1; BO denotes an oxyalkylene group comprising 4 carbon atoms; and u denotes the average number of moles of addition of BO, and ranges from 0.5 to 5. Advantageously, in formula (I): s ranges from 2 to 15, preferably from 3 to 7; t ranges from 3 to 20, preferably from 6 to 10; u goes from 1 to 5, preferably from 2 to 4. Polyoxybutylene polyoxyethylene polyoxypropylene glycerol represented by formula (I) can be obtained by adding propylene oxide and ethylene oxide to glycerin in the ratio of 3 to 150 molar equivalents of each of propylene oxide and ethylene oxide relative to glycerin, and then adding alkylene oxide having 4 carbon atoms in the ratio of 1.5 to 15 molar equivalents thereof relative to glycerin. In the case of adding the above-mentioned alkylene oxides to glycerin, the addition reactions are carried out with an alkali catalyst, a phase transfer catalyst, a Lewis acid catalyst, or the like. In general, an alkali catalyst such as potassium hydroxide is preferably used. Among the polyoxybutylene polyoxyethylene polyoxypropylene glycerol represented by formula (I), more preferable are those obtained by adding 6 to 10 mol of ethylene oxide and 3 to 7 mol of propylene oxide to glycerin, and then adding 2 to 4 mol of butylene oxide. Among the polyoxybutylene polyoxyethylene polyoxypropylene glycerol represented by formula (I), PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin is preferred, which is obtained by adding 8 mol of ethylene oxide and 5 mol of propylene oxide to glycerin, and then adding 3 mol of butylene oxide. PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin is commercially available under the trade name WILBRIDE S-753 from NOF Corporation. Advantageously, the polyoxybutylene polyoxyethylene polyoxypropylene glycerol is present in the composition according to the present invention in an amount ranging from 0.01% by weight to 15% by weight, preferably from 0.5% by weight to 5% by weight, and more preferably from 0.5% by weight to 2% by weight, relative to the total weight of the composition. C2-C4 polyols According to the first aspect, the composition of the present invention comprises at least one C2-C4 polyol, The term "polyol" as used herein means an alcohol having two or more hydroxy groups. The polyol can be a natural or synthetic polyol. The polyol can have a linear, branched or cyclic molecular structure. The C2-C4 polyol can be chosen from glycerin and its derivatives, as well as glycols and their derivatives. The polyol may be selected from the group consisting of glycerin, ethylene glycol, diethylene glycol, propylene glycol, butylene glycol and a mixture thereof. In the present invention, the definition of polyol includes all possible isomers. For example, propylene glycol includes 1,3-propylene glycol, 1,2-propylene glycol and 1,1-propylene glycol. Butylene glycol includes 1,4-butylene glycol, 1,3-butylene glycol, 1,2-butylene glycol, etc. Preferably, the C2-C4 polyol is selected from propanediol, butylene glycol, glycerin and combinations thereof. More preferably, the composition of the present invention comprises glycerin and propanediol. Advantageously, the C2-C4 polyol is present in the composition according to the present invention in an amount ranging from 0.01% by weight to 20% by weight, preferably from 5% by weight to 15% by weight, relative to the total weight of the composition. According to the invention, the composition of the present invention comprises no more than 1% of a diol containing 5 or more carbon atoms. The term "diol" as used herein means an alcohol having two hydroxy groups. For example, diols containing 5 or more carbon atoms may be pentylene glycol, hexylene glycol, or a mixture thereof. In some embodiments, the composition of the present invention does not include a diol containing 5 or more carbon atoms. Aqueous phase Preferably, the composition of the present invention comprises an aqueous phase. Said aqueous phase comprises water. Advantageously, water is present in the composition of the present invention in an amount ranging from 60% by weight to 90% by weight, preferably from 70% by weight to 88% by weight, relative to the total weight of the composition. Additional cosmetic active ingredients The composition of the present invention may comprise an additional cosmetic active ingredient. Examples of cosmetic active ingredients include moisturizing agents such as protein hydrolysates; botanical extracts; other vitamins such as vitamin A (retinol), vitamin E (tocopherol), vitamin C (ascorbic acid), vitamin B (panthenol) and derivatives of said vitamins (particularly esters) and mixtures thereof; urea; caffeine; anti-aging actives; firming agents; agents acting on microcirculation and mixtures thereof. It is easy for a person skilled in the art to adjust the amount of the additional cosmetic active ingredient based on the end use of the composition according to the present invention. Additional adjuvants or additives The composition of the present invention may also contain conventional cosmetic adjuvants or additives, for example, chelating agents, pH regulators, other thickeners and mixtures thereof. According to the first aspect, the composition does not comprise a preservative. The person skilled in the art can choose the amount of additional adjuvants or additives so as not to negatively impact the final use of the composition according to the present invention. Preferably, the composition according to the present invention does not comprise any fermentation extract, nor polysaccharide gum, such as xanthan gum. According to a particularly preferred embodiment, the present invention provides a composition for caring for keratinous materials comprising in an aqueous phase, relative to the total weight of the composition: (i) from 0.2% by weight to 0.5% by weight of sodium polyacrylate; (ii) from 0.2% by weight to 0.5% by weight of a polymer comprising at least one 2-acrylamido-2-methylpropanesulfonic acid monomer selected from sodium polyacryloyldimethyltaurate, ammonium polyacryloyldimethyltaurate, potassium polyacryloyldimethyltaurate and combinations thereof; (iii) from 0.5% by weight to 2% by weight of PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin; and (iv) from 5% by weight to 15% by weight of at least one C2-C4 polyol chosen from propanediol, butylene glycol, glycerin and combinations thereof, wherein the composition comprises not more than 1% of a diol containing 5 or more carbon atoms and a preservative. Mask The composition according to the present invention can be impregnated into a water-insoluble mask fabric to form a mask. According to the second aspect, the present invention provides a mask for caring for keratinous materials, comprising: A) a water-insoluble mask fabric, and B) the composition according to the present invention impregnated into the mask fabric. Water-insoluble mask fabric According to the second aspect, the mask according to the present invention comprises a water-insoluble mask fabric. For the purposes of the invention, the term "water-insoluble" means that the mask fabric is not soluble in water and does not disintegrate upon immersion in water. One skilled in the art can select a suitable mask fabric and the weight ratio between the mask fabric used and the composition according to the present invention is based on the nature of the composition. The mask fabric may be a woven or non-woven fabric made of natural fibers such as cotton, pulp, bamboo and cellulose fibers, semi-natural fibers such as viscose rayon fibers and synthetic fibers such as polyester fibers, polyethylene terephthalate fibers, polyethylene fibers and polypropylene fibers. Two or more fibers selected from The above fibers can be used in combination. In some embodiments, the mask fabric is an alginate fabric. Alginate fabrics are known in the art and are described in WO2020001069A 1. For example, an alginate fabric may comprise a water-insoluble alginate selected from calcium alginate, strontium alginate, zinc alginate, copper alginate, manganese alginate, or a mixture thereof, preferably calcium alginate, preferably in an amount ranging from 20% by weight to 100% by weight, preferably from 20% by weight to 50% by weight, relative to the total weight of the fabric. Preferably, when the mask fabric is an alginate fabric, the composition according to the present invention comprises a pH correcting agent chosen from sodium acetate, sodium citrate, sodium tartrate, and a combination thereof in an amount ranging from 0.01% by weight to 1.0% by weight, preferably from 0.05% by weight to 0.45% by weight, more preferably from 0.15% by weight to 0.3% by weight, relative to the total weight of the composition according to the present invention. The mask fabric can be made of one or more layers. If a multi-layer fabric is used, the material of each layer can be the same or different from the others. The multi-layer fabric can be prepared by superimposing multiple layers made of the above-mentioned materials. Mask fabric can come in a variety of shapes, depending on the intended use and the characteristic of the mask. The mask fabric is typically designed to conform to the area of ​​skin where topical application is desired. For example, when the mask is applied to the face, the mask fabric is designed to match the shape of the face, avoiding, where necessary, the eye, nostril, and mouth areas. Preferably, the weight ratio between the water-insoluble substrate and the composition ranges from 1:3 to 1:20. More preferably, the weight ratio between the water-insoluble substrate and the composition ranges from 1:10 to 1:18. Dosage form and use The composition of the present invention may take the form of a homogeneous aqueous system. The composition of the present invention can be used for the care of keratinous materials, in particular the skin. In particular, the composition and the mask according to the present invention are intended for topical application and skin care. According to the third aspect, the present invention provides a non-therapeutic process- Method for caring for keratinous materials, comprising the application of the composition according to the present invention to keratinous materials. According to the fourth aspect, the present invention provides a non-therapeutic process for caring for keratinous materials, comprising the steps of: (i) application of the mask according to the present invention to keratinous materials; (ii) leaving the mask on the keratinous materials for a certain time; and (iii) removal of the mask of keratinous materials. Keratinous materials are particularly skin. The mask as defined above is applied to at least one area of ​​the skin. In particular, the composition or mask as defined above is applied to the skin of the face and / or to the skin of the eyes. Preferably, the application time is from 5 minutes to 45 minutes, preferably from 10 minutes to 30 minutes. The following examples serve to illustrate the present invention without, however, being limiting in nature. EXAMPLES The main raw materials used, trade names and suppliers of these materials are listed in Table 1. [Tables 1] Trade name |BP GLYCERIN INCI Name | Glycerin Supplier ORGANIC CHEMICAL CORPORATION ACTIVON BASF CLARIANT [NOF CORPORATION ACTIVONOL3 COSMEDIA@SP - \HOSTACERN®O AMPS |WILBRIDE $-753D Propanediol 'Sodium polyacrylate Ammonium polyaeryloyl-dimethyl taurate PEG / PPG / Polybutylene glycol-8 / 5 / 3 glycerin Citric acid Citric acid CITRIC ACID JUNGBUNZLAUER MONOHYDRATE FINE F6000 Methyldihydrojasmonate HEDIONE® FAB FIRMENICH 964895 Xanthan Gum KELTROL® CG-T CP KELCO Inventive Example 1 and Comparative Examples 1-6 The compositions of Inventive Example (EI) 1 and Comparative Examples (CE) 1-6 were prepared based on the amounts given in Table 2. The amounts are given in % by weight of active ingredient relative to the total weight of the composition. [Tables 2] 0 0 0 0.3 0.3 0 0 0 2 2 0 0 0 to 3 | Components jEr1 EC.1 |EC.2 JEC.3 |EC.4 |ECS5 |EC.6 % % % % % % % weighted |weighted |weighted |weighted |weighted |weighted |weighted | al 1 al al 1 1 al [Water QS QS 100 |QS100 |JQS QS 100 |QS 100 |QS 100 100 100 Glycerin 5 5 5 5 0 5 |s Propanediol 7 7 # 7 0 5 $ Sodium polyacrylate |0.3 0.3 0 0.3 0.3 0.2 0.2 pme polyacry- |0.3 HE 0 0.3 0.2 02 loyldimethyl]l taurate PEG / PPG / Polybutylen | 1 qe qe qe qe je qe e glycol-8 / 5 / 3 glycerin Citric acid 0.14 0.14 0.14 [0.14 [0.14 [0.14 0.14 Methyldihydrojasmona |0 0 0 0 0 0 0.08 te Xanthan Gum 0 0 0 0 0 0.3 0.3 |Pentylene glycol 0 0 0 0 0 2 Z Butylene glycol 0 0 o 0 3 3 Preparation process: The above compositions were prepared as follows, taking as an example the composition of inventive formula 1: 1). Add water, glycerin and propanediol and PEG / PPG / Polybutylene Glycol-8 / 5 / 3 Glycerin into a beaker with stirring; 2). Slowly add the sodium polyacrylate and ammonium polyacryloyldimethyl taurate to the beaker with stirring; 3). Add citric acid to the beaker with stirring to obtain a homogeneous composition; 4). filling a sachet with the composition prepared above and a mask fabric, which is a non-woven fabric made of cellulose fibers, the weight ratio of the substrate used and the composition being 1:17, and sealing the sachet; 5). Place the sachet in a steam oven, heat the steam oven to 121 ®C for 15 minutes, then cool the oven and remove the resulting mask. Assessment Stability The stability of a test composition was evaluated as follows. 1) fill a standard 100 mL glass bottle 80% full with the sample, and prepare 7 bottles for each composition to be tested; 2) place one vial at room temperature (25°C), one vial in a refrigerator at 4°C, one vial in an oven at 37°C, and one vial in an oven at 45°C (for stability tests at different temperatures), and one vial in an oven with a temperature cycle of -10°C to 10°C (for cycle stability); and 3) observe the appearance of the samples after 2 hours for UV stability tests at room temperature, 4°C, 37°C and 45°C, or 10 days for the cycle stability test, The stability of a composition will be evaluated as STABLE if there is no separation, sensory change, odor change for the test composition after all the stability tests mentioned above, otherwise it will be evaluated as UNSTABLE. Bad smell and sensation 10 women aged 25-40 were asked to evaluate the samples by touching, sniffing and also applying the samples on the hand to check the feel and smell, and putting scores according to the following standard and the score was averaged: 5: excellent: 4:good; 3: unpleasant; 2: bad; 1: not acceptable. The stability results of each composition prepared above were summarized in Table 3. [Tables 3] Properties EL1 |EC.1 |EC.2 |EC.3 |EC.4 |CE.5 |CE.6 Stability - |preventable Stable [Unstable [Stable [Stable |Stable |Stable |Bad odor 5 3 4 4 4 | 1 2 Sensation + 5 qe qe qe 8 8

Claims

Claims

1. Composition for the care of keratinized materials comprising: (i) at least one polyacrylic acid salt; (il) at least one polymer comprising at least one acid monomer 2-acrylamido-2-methylpropanesulfonic acid; (iii) at least one polyoxybutylene polyoxyethylene polyoxypropylene glycerol; and (iv) at least one C2-C4 polyol, wherein the composition comprises not more than 1% of a diol containing 5 or more carbon atoms and a preservative.

2. A composition according to claim 1, wherein the polybasic acid salt acrylic is chosen from polyacrylic acid metal salts, preferably, the polyacrylic acid salt is chosen from the salts of sodium, potassium, lithium and ammonium of polyacrylic acid, more preferably, the polyacrylic acid salt is polyacrylate of sodium.

3. A composition according to any one of claims 1 or 2, in which the polymer comprises at least one acid monomer 2-acrylamido-2-methylpropanesulfonic acid is selected from homo- optional 2-acrylamido-2-methylpropanesulfonic acid polymers tively crosslinked and / or neutralized.

4. Composition according to any one of claims 1 to 3, in which polyoxybutylene polyoxyethylene polyoxypropylene glycerol is represented by the formula (I) shown below: Gly-{O(PO)(EO),-(BO),H}; (D in which Gly denotes a residue obtained by removal of hydroxyl groups from glycerin; PO denotes an oxypropylene group; EO denotes an oxyethylene group; set t denote the average numbers of moles of addition of PO and EO, respectively, and have a value ranging from 1 to 50; the PO to EO weight ratio (PO / EO) ranges from 1 / 5 to 5 / 1; BO denotes an oxyalkylene group having 4 carbon atoms; and u denotes the average number of moles of BO addition, and ranges from 0.5 to 5.

5. Composition according to claim 4, in which in the formula {D: s ranges from 2 to 15, preferably from 3 to 7; t ranges from 3 to 20, preferably from 6 to 10; u goes from 1 to 5, preferably from 2 to 4.

5. Composition according to any one of claims 1 to 4, in which polyoxybutylene polyoxyethylene polyoxypropylene glycerol is PEG / PPG / polybutylene glycol-8 / 5 / 3 glycerin.

6. Composition according to any one of claims 1 to 5, in in which the C2-C4 polyol is chosen from propanediol, butylene glycol, glycerin and their combinations.

7. A composition according to any one of claims 1 to 6, in which the composition is free from perfume or iron extracts- mentation, or polysaccharide gum or a diol containing 5 to 10 carbon atoms.

8. Care mask of keratinous materials, comprising in one phase aqueous: A) a water-insoluble mask fabric, and B) the composition according to any one of claims | to 7, impregnated into the mask fabric.

9. Non-therapeutic process for the care of keratinous materials, comprising the application of the composition according to any one of the claims | to 7 on keratinous materials.

10. Non-therapeutic process for the care of keratinous materials, including the following steps: (1) application of the mask according to claim 8 on the keratin materials tineuses; (ii) leaving the mask on the keratinous materials for a certain time; and (iii) removal of the mask of keratinous materials. CARE COMPOSITION OF KERATINOUS MATERIALS AND MASK CONTAINING IT