Aqueous gel, its use in cosmetics and a process to reduce the sticky feeling experienced during application

Abstract

Aqueous gel, its use in cosmetics and process to reduce the sticky effect felt during its application. Aqueous gel comprising from 0.5% wt to 5.0% wt of a crosslinked anionic polyelectrolyte (PA) comprising from 5.0% mol to 95.0% mol of monomeric units from 2-methyl-2-((1-oxo-2-propenyl)amino)-1-propanesulfonic acid partially or totally salified as an alkali salt or ammonium salt, from 4.9% mol to 90.0% mol of monomeric units of N,N-dialkylacrylamide and from 0.1% mol to 5.0% mol of monomeric units from a monomer of formula CH2=C(CH3)-C(=O)-O-(CH2-CH2-O-)n-R5; from 0.5% mass to 9.5% mass, either of an alkanol of formula R1-OH, or of a mixture of alkanols of formula R1-OH; or of a composition (C) of alkyl polyglycosides represented by the formulas R1-O-(G)xH, in which G represents either the remainder of glucose or the remainder of xylose and x represents a decimal number between 1.05 and 2.05;either a mixture (M) of said alkanol of formula R1-OH or of said mixture of alkanols of formula R1-OH and of said composition (C); from 0.0% mass to 3.0% mass one or more cosmetic active ingredients and the quantity of water necessary to make up to 100% mass in which the mass ratio (RM) having as numerator the mass of the alkanol(s) of formula R1-OH, or the mass of said composition (C) or the mass of said mixture (M) and as denominator, the mass of said cross-linked anionic polyelectrolyte (PA), is greater than or equal to 1 and less than or equal to 10; cosmetic skin care process using said aqueous gel; use, either of said alkanol of formula R1-OH, or of a mixture of alkanols of formula R1-OH, or of said composition (C) or of said mixture (M), with a view to reducing or eliminating the sticky effect felt when applying to the skin an aqueous gel comprising said anionic polyelectrolyte (PA);process for reducing or eliminating the sticky feeling experienced when applying an aqueous gel comprising said anionic polyelectrolyte (PA) to the skin by modifying its composition before application to the skin, by adding either the alkanol(s) of formula R1-OH, or said composition (C), or said mixture (M).;

Description

Title of the invention: Aqueous gel, its use in cosmetics and method for reducing the sticky effect felt during its application

[0001] The invention relates, in general, to the field of cosmetics and more particularly to the field of topical cosmetic formulations.

[0002] The invention relates more specifically to the improvement of the sensory properties of aqueous gels. It thus relates to a new aqueous gel, optionally rich in salts, its use as a cosmetic composition for topical use, as well as a new method for reducing the stickiness of a thickened aqueous gel, optionally rich in salts. Prior art

[0003] Serums are widely used today for cosmetic skin treatment. A serum is an aqueous solution designed to be rapidly absorbed by the superficial layers of the epidermis and often contains a high concentration of active ingredients. They are generally used in conjunction with various skincare formulations to enhance their effects.

[0004] Such a treatment comprises a first step of cleansing the skin, followed by a second step of applying the serum to the cleansed skin, and finally a last step of applying the desired cosmetic skincare formulation. This process is particularly relevant when the user observes that the effect of the skincare formulation is diminished due to external factors such as climatic or environmental conditions, or in the event of a sudden change in the skin's condition, such as dryness.

[0005] Serums include substances with various properties, such as moisturizing, brightening, purifying, anti-aging, anti-wrinkle, energizing, anti-sebum or anti-sebum properties.

[0006] Cosmetic serums are generally aqueous gels in which the active substances are kept in suspension or solubilized so that they can be applied directly to the skin. In this way, the possibility of interference with other ingredients, such as oils, on the skin is overcome.

[0007] In order for serums to be rapidly absorbed by the stratum comeum, they must have a non-greasy texture, and a balance between flow characteristics sufficiently fluid to be quickly spread over the surface of the skin to be treated; they must also be sufficiently gelled to avoid dripping at the time of application.

[0008] Synthetic polymers and polymers of natural origin are well-known thickening agents for aqueous phases in cosmetics, used by those skilled in the art, and which allow the preparation of an aqueous gel for topical uses in the field of cosmetics and pharmaceuticals.

[0009] Synthetic thickening polymers currently used in this field are available in powder form or as a liquid, such as a water-in-oil emulsion of the polymer prepared by reverse emulsion radical polymerization using surfactants, commonly referred to as reverse latex. Among the best-known synthetic thickening polymers in powder form are those based on acrylic acid or its esters, such as those marketed under the names Carbopol™ or Pemulen™. These are described in particular in US patents US5373044 and US2798053, as well as in European patent application EP0301532A2. There are also polymers based on 2-acrylamido-2-methylpropanesulfonic acid and its salts, such as those marketed under the name Aristoflex™. They are described in particular in European patents EP0816403, EPI 116733 and EP1069142.These powders are generally obtained by precipitating polymerization of the monomer(s) in solution in an organic solvent such as benzene, ethyl acetate, cyclohexane or tert-butanol; this process therefore requires numerous successive purification steps of the final product to eliminate any trace of residual solvent.

[0010] Among the best-known inverse latexes are those marketed under the names Sepigel™, Shnulgel™, Sepiplus™, and Sepilife™. These thickeners are obtained by radical polymerization in inverse emulsions. They are easier to handle, particularly at room temperature, and disperse very rapidly in water. Furthermore, they exhibit remarkably high thickening performance. However, because they contain at least one oil, this makes them potentially less suitable for preparing aqueous gels where there is no possibility of interaction between the active ingredients and the skin.

[0011] Synthetic thickeners also exist that have thickening performance equivalent to or superior to inverse latexes, but offer more versatile applications, particularly due to the absence of any oil phase that could lead to aqueous gels. They are in powder form but have dissolution times, and therefore ease of use, comparable to those of products in liquid form. They are described in European patent application EP1496081A2. They are obtained by conventional polymerization techniques, such as dispersed-phase radical polymerization, inverse suspension radical polymerization, inverse emulsion radical polymerization, or combined inverse microemulsion radical polymerization followed by a Separation is achieved through various techniques such as precipitation in a third solvent, precipitation in a third solvent followed by optional washing, spray drying, or azeotropic dehydration, possibly followed by washing with a carefully selected solvent. These synthetic thickeners thus combine some of the advantages of conventional powder-based synthetic thickeners (oil-free, producing clearer aqueous gels) with the advantages of reverse latex-based synthetic thickeners (pre-neutralization, high dissolution rate, remarkable thickening power, and stabilizing properties).

[0012] However, the gels obtained with these synthetic thickeners do not have satisfactory stability when the composition is rich in electrolytes as is often the case with sera including, for example, plant extracts rich in electrolytes, or mineral salts.

[0013] Linear, branched or crosslinked terpolymers of at least one monomer having a strong acid function, free, partially salified or totally salified, and at least one monomer of formula CH2=C(CH3)-C(=O)-O-(CH2-CH2-O-)n-R2, in which R2 represents a linear or branched alkyl radical comprising eight to twenty carbon atoms and n represents a number greater than or equal to 1 and less than or equal to 30, are described in the international application published under number WO2011030044.

[0014] However, when aqueous gels are prepared by using such synthetic thickening terpolymers in the presence of electrolytes, consumers experience a sticky sensation after application to the skin. This sensation is unpleasant and requires a waiting period before applying another skincare product to complete the routine. Indeed, serum is generally applied before the moisturizer, and therefore, its application to the skin should not leave it feeling sticky.

[0015] The international patent application published under number WO2018024962A1 describes the preparation of aqueous gels comprising cross-linked anionic polyelectrolytes of formula (A), salts, electrolytic species, water, and sorbitan esters, such as ethoxylated sorbitan oleates, which exhibit, in particular, low turbidity and high stability during storage at room temperature and at 45 °C. However, such aqueous gels exhibit sticky characteristics on the skin that are not yet satisfactory and require improvement.

[0016] Another solution may consist of adding silicone oils to the aqueous gel, but silicone oils are abandoned for the preparation of cosmetic formulations because they are not sufficiently biodegradable.

[0017] Another solution consists of combining biodegradable alkanes with the aqueous gel, drawing inspiration from the technical teaching contained in the international application of patent number WO2018109353. However, while their contribution is relevant in the context of oil-in-water emulsions, such alkanes give the aqueous gel an undesirable greasy and oily sensory state. Description of the invention

[0018] It therefore became necessary to develop an aqueous gel which shows a homogeneous appearance after three months of storage at a temperature of 20°C as well as at 45°C, which does not provide a sticky sensation after its application to the skin and which does not contain oil to avoid any interference with the upper layers of the epidermis.

[0019] Therefore, according to a first aspect, the invention relates to an aqueous gel characterized in that it comprises, for 100% of its mass: • from 0.5% by mass to 5.0% by mass of a cross-linked anionic polyelectrolyte (PA) comprising, at 100% molar: • from 5.0 molar % to 95.0 molar %, of monomeric units derived from 2-methyl-2-((l-oxo-2-propenyl)amino)-l-propanesulfonic acid of formula (I) (CH2=CH-C(=O)-NH)-C(CH3)2-S(=O)2-OH, partially or totally salted in the form of an alkali salt or an ammonium salt, • from 4.9 mol% to 90.0 mol% of monomeric units derived from a monomer of formula (II) CH2=CH-C(=O)-N(R4)2, in which R4 represents a linear or branched alkyl radical comprising one to four carbon atoms, and • from 0.1 mol% to 5.0 mol% of monomeric units from a monomer of formula (III) CH2=C(CH3)-C(=O)-O-(CH2-CH 2-O-)n-R5, in which R5 represents a linear or branched alkyl radical comprising eight to twenty carbon atoms and n represents a number greater than or equal to 1 and less than or equal to 20, • from 0.5% by mass to 9.5% by mass: • either an alkanol of formula (IV) Ri-OH, in which Ri represents a linear or branched alkyl radical comprising eight to twenty-two carbon atoms, or a mixture of alkanols of formulas (IV); • either of a composition (C) of alkyl polyglycosides represented by the formulas (V) Ri-O-(G)XH, in which G represents either a remnant of glucose or a remnant of xylose and x represents a decimal number between 1.05 and 2.05, said composition (C) consisting, for 100% molar, of a mixture of ai% molar of the compound with the formula RrO-(G)iH, a2 molar% of the compound with the formula Ri-O-(G)2-H, a3 molar% of the compound of formula Ri-O-(G)3-H, 34 molar% of the compound of formula RrO-(G)4-H, and a5 molar% of the compound of formula Ri-O-(G)5-H, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100 molar% and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x; • either a mixture (M) of said alkanol of formula (IV) or of said mixture of alkanols of formula (IV) and of said composition (C), • from 0.0% by mass to 3.0% by mass one or more cosmetic active ingredients selected from the group consisting of retinol, vitamin C, niacinamide (vitamin B3), undecylenoyl phenylalanine, glycolic acid, azelaic acid, hyaluronic acid, the mixture of xylitol, polyglucosides and 1,4-anhydroxylitol and urea, and • the quantity of water required to make up to 100% by mass, and in that within said aqueous gel, the mass ratio (RM) having as numerator either the mass of said alkanol of formula (IV) or of said mixture of alkanols of formula (IV), or the mass of said composition (C) or the mass of said mixture (M) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0.

[0020] For the purposes of this invention, crosslinked anionic polyelectrolyte (PA) refers to a nonlinear crosslinked anionic polyelectrolyte in the form of a three-dimensional network that is insoluble in water but swells in water, leading to the formation of a chemical gel. In this context, the crosslinking agent used in the polymerization reaction from which said crosslinked anionic polyelectrolyte (PA) is produced is a diethylenic or polyethylene compound, more particularly selected from ethylene glycol dimethacrylate, tetraallyloxyethane, ethylene glycol diacrylate, diallyl urea, triallyl amine, trimethylol propanetriacrylate, methylene-bis(acrylamide), or a mixture of these compounds.The crosslinking agent is used in this reaction in a molar proportion, expressed relative to the monomers used, greater than or equal to 0.005% and less than or equal to 1.000% molar, more particularly greater than or equal to 0.010% and less than or equal to 0.500% molar, and especially greater than or equal to 0.010% and less than or equal to 0.250% molar. Depending on the salt concentration of the aqueous medium constituting said topical cosmetic serum, said... Topical cosmetic serum generally comprises 0.5% by mass to 5.0% by mass of said anionic polyelectrolyte (PA).

[0021] According to a first particular mode, the aqueous gel as defined above is characterized in that said mass ratio (MR) is greater than or equal to 1.5 and less than or equal to 5.0

[0022] According to another particular embodiment, the aqueous gel as defined above is characterized in that said crosslinked anionic polyelectrolyte (PA) comprises, for 100 mol%, from 60.0 mol% to 80.0 mol% of monomeric units derived from the acid of formula (III), partially salified as an ammonium salt, from 15.0 mol% to 39.5 mol% of monomeric units derived from N,N-dimethyl acrylamide, and from 0.5 mol% to 5.0 mol% of monomeric units derived from tetra-ethoxylated lauryl methacrylate.As an example of such anionic crosslinked polyelectrolyte (PA), there is SEPIMAX ZEN™ marketed by SEPPIC, which is a trimethylol propanetriacrylate crosslinked terpolymer, comprising per 100 molar, 77.4 molar of monomeric units from 2-methyl-2-((l-oxo-2-propenyl)amino) 1-ammonium propanesulfonate, 19.2 molar of monomeric units from N,N-dimethyl acrylamide and 3.4 molar of monomeric units from tetraethoxylated lauryl methacrylate.

[0023] According to another particular mode, the aqueous gel as defined above is characterized in that in the water constituting said aqueous gel, at least one water-soluble salt chosen from the group consisting of alkali metal salts, alkaline earth metal salts and transition metal salts is dissolved, such that the total concentration in the water of said at least one water-soluble salt is greater than 0.00 mole per liter and less than or equal to 1.00 mole per liter.Examples of water-soluble salts more particularly present in said aqueous gel as defined above include those chosen from the group consisting of sodium chloride, calcium chloride, magnesium chloride, ammonium chloride, sodium sulfate, calcium sulfate, magnesium sulfate, zinc sulfate, ammonium sulfate, sodium borate, sodium glycolate, sodium citrate, sodium salicylate, sodium lactate, sodium gluconate, zinc gluconate, manganese gluconate, copper gluconate, sodium aspartate, and magnesium aspartate.

[0024] According to another particular aspect of the present invention, the aqueous gel as defined above is characterized in that said radical Ri, present in formulas (IV) and (V), represents a branched alkyl radical R1A of formula CH3-(CH2)P-CH(CH3-(CH2)(p-2))-CH2-, in which p represents an integer greater than or equal to three and less than or equal to nine. According to this particular aspect, said alkanol of formula (IV) is preferably 2-octyl dodecanol of formula (IVA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-OH and said composition (C) is preferably a composition (CA) of alkyl polyxylosides of formula (VA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)XH in which GA represents the xylosyl radical or α,[3-D-xylopyranosyl] and x represents a decimal number between 1.05 and 2.05, more particularly between 1.10 and 2.00, and even more particularly between 1.20 and 1.80, said composition (CA) consisting, for 100 mol%, of a mixture of α mol% of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)iH, a2 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)2-H, a3 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)3-H, a4 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)4-H, and a5 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)5-H,such that the sum aj% + a2% + a3% + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x. ,

[0025] Within the framework of this preferred aspect, the invention relates particularly to the aqueous gel as defined above, comprising a mixture (MA) consisting of, for 100% of its mass, 10.0% by mass to 50.0% by mass of said composition (CA) and 50.0% by mass to 90.0% by mass of said alkanol of formula (IVA), in a proportion such that the mass ratio (RMA) having as numerator the mass of said mixture (MA) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0 and is more particularly greater than or equal to 1.5 and less than or equal to 5.0. As an example of such a mixture (MA), there is the composition comprising 100% of its mass 75.0% mass of 2-octyl dodecanol and 25.0% mass of (2-octyl dodecyl) polyxylosides resulting from the reaction in acid medium of xylose and 2-octyl dodecanol, marketed by the company SEPPIC under the name Fluidanov™ 20X.

[0026] According to another particular aspect, the aqueous gel as defined above is characterized in that said radical Ri present in formulas (IV) and (V) represents a linear alkyl radical RiB comprising twelve to twenty-two carbon atoms and particularly fourteen to twenty-two carbon atoms.

[0027] According to this particular aspect, the aqueous gel as defined above is characterized in that said alkanol of formula (IV) or said mixture of alkanols of formula (IV) is preferably a mixture of alkanols of formula (IVB) RiB-OH in which the radical RiB represents a linear alkyl radical comprising twenty to twenty-two carbon atoms, and said composition (C) is preferably a composition (CB) of alkyl polyglucosides of formula (VB) RiB-O-(GB)xH, in which the radical RiB is as defined above, GB represents the glucosyl or α,[3-D-glucopyranosyl] radical and x represents a decimal number between 1.05 and 2.05, more particularly between 1.10 and 2.00, and even more particularly between 1.20 and 1.80, said composition (CB) consisting, for 100% molar, of a mixture of ai% molar of the compound of formula RiB-O-(GB)iH, a2% molar of the compound of formula RiB-O-(GB)2-H, a3% molar of the compound of formula RiB-O-(GB)3-H, a4% molar of the compound of formula RiB-O-(GB)4-H and a5% molar of the compound of formula RiB-O-(GB)5-H, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to lOOx.Within the framework of this preferred aspect, the invention relates more particularly to the aqueous gel as defined above, characterized in that it comprises a mixture (MB) consisting, for 100% of its mass, of 50.0% by mass to 90.0% by mass of a mixture of arachidyl alcohol and behenyl alcohol and of 10.0% by mass to 50.0% by mass of a composition (CB) of alkyl polyglucosides resulting from the reaction in acid medium of glucose and said mixture of behenyl alcohol and arachidyl alcohol, in a proportion such that the mass ratio (RMb) having as numerator the mass of said mixture (MB) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0 and is more particularly greater than or equal to 1.5 and less than or equal to 5.0.An example of such a mixture (MB) is the composition comprising, for 100% of its mass, 80.0% by mass of an equimass mixture of behenyl alcohol and arachidyl alcohol and 20.0% by mass of alkyl polyglucosides resulting from the reaction in acidic medium of glucose and said equimass mixture of behenyl alcohol and arachidyl alcohol, marketed under the name Montanov™ 202 by the company SEPPIC.

[0028] The invention also relates to a cosmetic skin care process characterized in that it comprises the following successive steps: • a skin cleansing step; • followed by an application step to cleansed skin of the aqueous gel as defined previously, and • optionally followed by a step of applying the desired cosmetic skincare formulation to the skin.

[0029] The invention also relates to the use of either an alkanol of formula (IV) Ri-OH, in which Ri represents a linear or branched alkyl radical comprising eight to twenty-two carbon atoms, or a mixture of alkanols of formula (IV); or a composition (C) of alkyl polyglycosides represented by the formulas (V) Ri-O-(G)XH, in which G represents either a glucose residue or a xylose residue and x represents a decimal number between 1.05 and 2.05, more particularly between 1.10 and 2.00, even more particularly between 1.20 and 1.80, said composition (C) consisting, for 100 molar, of a mixture of ai% molar of the compound of formula Ri-O-(G)1H, a2% molar of the compound of formula Ri-O-(G)2-H, a3% molar of the compound of formula Ri-O-(G)3-H, a4% molar of the compound of formula Ri-O-(G)4-H and a5% molar of the compound of formula Ri-O-(G)5-H, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x; either of a mixture (M) of said alkanol of formula (IV) or of said mixture of alkanols of formula (IV) and of said composition (C), said use being characterized in that it is for the purpose of reducing or eliminating the sticky effect felt when applying to the skin an aqueous gel comprising, for 100% of its mass, from 0.5% by mass to 5.0% by mass, a cross-linked anionic polyelectrolyte (PA) comprising, for 100% molar, from 5.0% molar to 95.0% molar,of monomeric units derived from 2-methyl-2-((l-oxo-2-propenyl)amino)-l-propanesulfonic acid of formula (I) (CH2=CH-C(=O)-NH)-C(CH3)2-S(=O)2-OH, partially or totally salted as an alkali salt or ammonium salt, from 4.9 mol% to 90.0 mol% of monomeric units derived from a monomer of formula (II) CH2=CH-C(=O)-N(R4)2 in which IG represents a linear or branched alkyl radical comprising one to four carbon atoms, and from 0.1 mol% to 5.0 mol% of monomeric units derived from a monomer of formula (III) CH2=C(CH3)-C(=O)-O-(CH2-CH2-O-)n-R5, in which R5 represents a linear or branched alkyl radical comprising eight to twenty carbon atoms and n representing a number greater than or equal to 1 and less than or equal to 20.

[0030] The sticky feeling experienced when applying an aqueous gel to the skin refers to an effect induced by the gel's adhesion force to the skin. In the context of the present invention, the adhesion force is measured using a rheometer, in particular the DHR2™ Rheometer marketed by Texas Instruments. The adhesion force of a gel must be less than four newtons so that the user does not feel this sticky effect when applying it to their skin.

[0031] According to a particular aspect, the use as defined above is characterized in that said crosslinked anionic polyelectrolyte (PA) comprises, for 100 mol%, 60.0 mol% to 80.0 mol% of monomeric units derived from the acid of formula (III), partially salified as an ammonium salt, 15.0 mol% to 39.5 mol% of monomeric units derived from N,N-dimethyl acrylamide, and 0.5 mol% to 5.0 mol% of monomeric units derived from tetra-ethoxylated lauryl methacrylate. As an example of such anionic crosslinked polyelectrolyte (PA), there is SEPIMAX ZEN™ marketed by SEPPIC, which is a trimethylol propanetriacrylate crosslinked terpolymer, comprising, per 100 molar percentage, 77.4 molar percentages of monomeric units derived from 2-methyl- 2-((l-oxo-2-propenyl) amino) 1-ammonium propanesulfonate, 19.2 mol% of monomeric units derived from N,N-dimethyl acrylamide and 3.4 mol% of monomeric units derived from tetraethoxylated lauryl methacrylate.

[0032] According to another particular aspect, the use as defined above, is characterized in that said radical Ri present in formulas (IV) and (V), represents a branched alkyl radical R[A of formula CH3-(CH2)p-CH(CH3-(CH2)(p 2))-CH2-, in which p represents an integer greater than or equal to three and less than or equal to nine. According to this particular aspect, the use as defined above is characterized in that said alkanol of formula (IV) is preferably 2-octyl dodecanol of formula (IVA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-OH and said composition (C) is preferably a composition (CA) of alkylpolyxylosides of formula (VA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)XH in which Ga represents the xylosyl radical or α,[3-D-xylopyranosyl, x represents a decimal number between 1.05 and 2.05, more particularly between 1.10 and 2.00, even more particularly between 1.20 and 1.80, said composition (CA) consisting,for 100% molar, in a mixture of ai% molar of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)iH, a2% molar of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)2-H, a3% molar of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)3-H, a4% molar of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)4-H, and a5% molar of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)5-H, such that the sum ai% + a2% + a3% +a4% + a5% is equal to 100% molar and the sum a1% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x. Within the framework of this preferred aspect, the invention relates more particularly to the use, as defined above, of a mixture (MA) consisting, by mass, of 100% of its composition (CA) from 10.0% to 50.0% of said composition (CA) and from 50.0% to 90.0% of said alkanol of formula (IVA). As an example of such a mixture (MA), there is the composition comprising, by mass, 75,0% by mass of 2-octyl dodecanol and 25.0% by mass of (2-octyl dodecanol) polyxylosides, marketed by SEPPIC under the name Fluidanov™ 20X.

[0033] According to another particular aspect, the use as defined above is characterized in that said radical, said radical Ri present in formulas (IV) and (V), represents a linear alkyl radical R1B comprising from twelve to twenty-two carbon atoms, and more particularly from fourteen to twenty carbon atoms. According to this particular aspect, the use as defined above is characterized in that said alkanol of formula (IV) or said mixture of alkanols of formula (IV) is preferably a mixture of alkanols of formula (IVB) RiB-OH in which the radical R[B] represents a linear alkyl radical comprising from twenty to twenty-two carbon atoms, and said composition (C) is preferably a composition (CB) of alkyl polyglucosides of formula (VB) RiB-O-(GB)xH, wherein the radical R[B] is as defined above, GB represents the glucosyl radical or α,[3-D-glucopyranosyl] and x represents a decimal number between 1.05 and 2.05, more particularly between 1.10 and 2.00, and even more particularly between 1.20 and 1.80, said composition (CB) consisting, for 100 mol%, of a mixture of α mol% of the compound of formula RiB-O-(GB)1H, α2 mol% of the compound of formula RiB-O-(GB)2-H, α3 mol% of the compound of formula RiB-O-(GB)3-H, α4 mol% of the compound of formula RiB-O-(GB)4-H and α5 mol% of the compound of formula RiB-O-(GB)5-H, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to lOOx.Within the framework of this preferred aspect, the invention relates more particularly to the use, as defined above, of a mixture (MB) consisting of, for 100% of its mass, 50.0% by mass to 90.0% by mass of a mixture of arachidyl alcohol and behenyl alcohol) and 10.0% by mass to 50.0% by mass of a composition (CB) of alkyl polyglucosides resulting from the reaction in acidic medium of glucose and said mixture of behenyl alcohol and arachidyl alcohol. As an example of such a mixture (MB) as defined above, there is the composition comprising, for 100% of its mass, 80.0% by mass of an equimass mixture of behenyl alcohol and arachidyl alcohol and 20.0% by mass of alkyl polyglucosides resulting from the reaction in acidic medium of glucose and said equimass mixture of behenyl alcohol and arachidyl alcohol, marketed under the name Montanov™ 202 by the company SEPPIC.

[0034] The invention further relates to a method for reducing or eliminating the sticky effect felt when applying to the skin an aqueous gel comprising, by mass, 0.5% to 5.0% of a cross-linked anionic polyelectrolyte (PA) comprising, by mol%, 5.0% to 95.0% of monomeric units derived from 2-methyl-2-((l-oxo-2-propenyl)amino)-l-propanesulfonic acid of formula (I) (CH2=CH-C(=O)-NH)-C(CH3)2-S(=O)2-OH, partially or totally salted in the form of an alkali salt or ammonium salt, and 4.9% to 90.0% of monomeric units derived from a monomer of formula (II) CH2=CH-C(=O)-N(R4)2 in which IG represents a linear or branched alkyl radical comprising one to four carbon atoms, and 0.1 mol% to 5.0 mol% of monomeric units derived from a monomer of formula (III) CH2 =C(CH3)-C(=O)-O-(CH2-CH2-O-)n-R5,in which R5 represents a linear or branched alkyl radical comprising eight to twenty carbon atoms and n represents a number greater than or equal to 1 and less than or equal to 20, characterized in that the composition of this aqueous gel is modified, before its application to the skin, by y , adding either an alkanol of formula (IV) RrOH, in which Ri represents a linear or branched alkyl radical comprising eight to twenty-two carbon atoms, or a mixture of alkanols of formula (IV); let (C) be a composition of alkyl polyglycosides represented by the formulas (V) Ri-O-(G)XH, in which G represents either the remainder of glucose or the remainder of xylose and x represents a decimal number between 1.05 and 2.05, more particularly between 1.10 and 2.00, even more particularly between 1.20 and 1.80, said composition (C) consisting, for 100% molar, of a mixture of ai% molar of the compound of formula Ri-O-(G)XH, a2% molar of the compound of formula Ri-O-(G)XH, a3% molar of the compound of formula Ri-O-(G)XH, a4% molar of the compound of formula Ri-O-(G)XH and a5% molar of the compound of formula Ri-O-(G)XH, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100% molar and that the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to lOOx;either a mixture (M) of said alkanol of formula (IV) or of said mixture of alkanols of formula (IV) and of said composition (C), in a proportion such that the mass ratio (RM) within the aqueous gel thus modified, having as numerator either the mass of said alkanol of formula (IV) or of said mixture of alkanols of formula (IV), or the mass of said composition (C), or the mass of said mixture (M) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0 and more particularly, greater than or equal to 1.5 and less than or equal to 5.0.;

[0035] The sticky feeling experienced when applying an aqueous gel to the skin refers to an effect induced by the gel's adhesion force to the skin. In the context of the present invention, the adhesion force is measured using a rheometer, in particular the DHR2™ Rheometer marketed by Texas Instruments. The adhesion force of a gel must be less than four newtons so that the user does not feel this sticky effect when applying it to their skin.

[0036] According to a particular aspect, the process as defined above is characterized in that said crosslinked anionic polyelectrolyte (PA) comprises, for 100 mol%, from 60.0 mol% to 80.0 mol% of monomeric units derived from the acid of formula (III), partially salified as an ammonium salt, from 15.0 mol% to 39.5 mol% of monomeric units derived from N,N-dimethyl acrylamide, and from 0.5 mol% to 5.0 mol% of monomeric units derived from tetra-ethoxylated lauryl methacrylate.

[0037] According to another particular aspect, the process as defined above is characterized in that said radical Ri present in formulas (IV) and (V), represents a branched alkyl radical R1A of formula CH3-(CH2)p-CH(CH3-(CH2)(p 2j)-CH2-, in which p represents an integer greater than or equal to three and less than or equal to nine. According to this particular aspect, the process as defined above is characterized in that said alkanol of formula (IV) is preferably 2-octyl dodecanol of formula (IA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-OH and said composition (C) is preferably a composition (CA) of alkyl polyxylosides of formula (VA) CH3-(CH2)g-CH(CH3-(CH2)7)-CH2-O-(Ga)xH in which GA represents the xylosyl radical or α,[3-D-xylopyranosyl], x represents a decimal number between 1.05 and 2.05, more particularly between 1.10 and 2.00, and even more particularly between 1.20 and 1.80, said composition (CA) consisting, for 100 mol%, of a mixture of α mol% of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)iH, a2 molar % of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)2-H, a3 molar % of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)3-H, a4 molar % of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)4-H,and a5% molar of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)5-H, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100% molar and that the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x. Within the framework of this preferred aspect, the invention relates more particularly to the process as defined above, characterized in that the composition of said aqueous gel is modified before its application to the skin, by adding thereto a mixture (MA) consisting, for 100% of its mass, of 10.0% by mass to 50.0% by mass of said composition (CA) and of 50.0% by mass to 90.0% by mass of said alkanol of formula (IVA), in a proportion such that within said aqueous gel thus modified, the mass ratio (Rma) having as numerator the mass of said mixture (MA) and as denominator, the mass of said cross-linked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0 and is more particularly greater than or equal to 1.5 and less than or equal to 5,0. As an example of such a mixture (MA) implemented in the process as defined above, there is the composition comprising, for 100% of its mass, 75.0% by mass of 2-octyl dodecanol and 25.0% by mass of (2-octyl dodecyl) polyxylosides, marketed by the company SEPPIC under the name Fluidanov™ 20X.

[0038] According to another particular aspect, the process as defined above is characterized in that said radical Ri, present in formulas (IV) and (V), represents a linear alkyl radical RiB comprising from twelve to twenty-two carbon atoms, and more particularly from fourteen to twenty-two carbon atoms. According to this particular aspect, said alkanol of formula (IV) or said mixture of alkanols of formula (IV) is preferably a mixture of alkanols of formula (IVB) RiB-OH in which the radical R1B represents a linear alkyl radical comprising from twenty to twenty-two carbon atoms, and said composition (C) is preferably a composition (CB) of alkyl polyglucosides of formula (VB) RiB-O-(GB)xH, in which the The radical RiB is as defined above, GB represents the glucosyl radical or α,[3-D-glucopyranosyl], and x represents a decimal number between 1.05 and 2.05, more particularly between 1.10 and 2.00, and even more particularly between 1.20 and 1.80, said composition (CB) consisting, for 100% molar, of a mixture of α mol% of the compound of formula RiB-O-(GB)1H, α2 mol% of the compound of formula RiB-O-(GB)2H, α3 mol% of the compound of formula RiB-O-(GB)3H, α4 mol% of the compound of formula RiB-O-(GB)4H, and α5 mol% of the compound of formula RiB-O-(GB)5H, such that the sum α1% + α2% + α3% + α4% + α5% is equal to 100% molar and that the The sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to lOOx.Within the framework of this preferred aspect, the invention relates more particularly to the process as defined above, characterized in that the composition of said aqueous gel is modified, before its application to the skin, by adding thereto a mixture (MB) consisting, for 100% of its mass, of 50.0% by mass to 90.0% by mass of a mixture of arachidyl alcohol and behenyl alcohol and 10.0% by mass to 50.0% by mass of a composition (CB) of alkyl polyglucosides resulting from the reaction in acidic medium of glucose and said mixture of behenyl alcohol and arachidyl alcohol, in a proportion such that within said aqueous gel thus modified, the mass ratio (RMB) having as numerator the mass of said mixture (MB) and as denominator the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0 and is more particularly greater than or equal to 1.5 and less than or equal to 5.0.As an example of such a mixture (MB) implemented in the process as defined above, there is the composition comprising, for 100% of its mass, 80.0% by mass of an equimass mixture of behenyl alcohol and arachidyl alcohol and 20.0% by mass of alkyl polyglucosides resulting from the reaction in acid medium of glucose and said equimass mixture of behenyl alcohol and arachidyl alcohol, marketed under the name Montanov™ 202 by the company SEPPIC. .

[0039] The following experimental section illustrates the invention without, however, modifying it.

[0040] Preparation of aqueous gels. The aqueous gels A, A', B, C, E, E', F, G, and H according to the invention, and the control gels T1 and T2, are prepared by mixing their constituents. Their respective compositions are listed in Tables 1 to 4 below, along with those of the control solutions T1 and T2 in Table 3. The process for their preparation, common to all, is as follows: - The required quantity of water, at a temperature of 20°C, is poured into a reactor equipped with mechanical stirring and a double jacket containing a heat transfer fluid, which is then brought to a temperature of 25°C. under mechanical agitation of Rayneri type equipped with a deflocculator at a speed of one thousand revolutions per minute; - the cross-linked anionic polyelectrolyte (PA1) is then gradually added at this temperature of 25°C under mechanical stirring; - - after homogenizing the previously obtained gel, the anti-sticking agent the product to be tested is then gradually added at a temperature of 25°C under mechanical stirring at a speed of one thousand revolutions per minute; - - the resulting mixture is then kept at a temperature of 25°C, then, If necessary, salt is added to the previously obtained medium, always under mechanical stirring.

[0041] Gels D, D', I and J are prepared as above but at a temperature between 75°C and 85°C. The possible addition of salt is carried out after cooling to 40°C.

[0042] [Tables 1] Composition of aqueous gels (% by mass) Components J, ABCD Cross-linked anionic polyelectrolyte PAi 1.0% 1.0% 1.0% 1.0% Fluidanov™ 20X 2.0% 3.0% 5.0% 0.0% Arachidyl alcohol 0.0% 0.0% 0.0% 5.0% 2-Octyl dodecanol 0.0% 0.0% 0.0% 0.0% Water q.s. 100% q.s. 100% q.s. 100% q.s. 100% q.s. 100%

[0043] [Tables2] Composition of aqueous gels (% by mass) Components J, E A' D' E' Cross-linked anionic polyelectrolyte PAi 1.0% 1.0% 1.0% 1.0% Fluidanov™ 20X 0.0% 2.0% 0.0% 0.0% Arachidyl alcohol 0.0% 0.0% 2.0% 0.0% 2-Octyl dodecanol 5.0% 0.0% 0.0% 2.0% Water q.s. 100% 1.0% 1.0% 1.0%

[0044] [Tables3] Composition of aqueous gels (mass %) Components J, FGH Cross-linked anionic polyelectrolyte PAi 1.0% 1.0% 1.0% Fluidanox™20X 2.0% 0.5% 1.0% Arachidyl alcohol 0.0% 0.0% 0.0% 2-Octyl dodecanol 0.0% 0.0% 0.0% NaCl 1.0% 1.0% 1.0% Water q.s. 100% q.s. 100% q.s. 100%

[0045] [Tables4] Composition of aqueous gels (mass %) Components J, IJT! t2 Cross-linked anionic polyelectrolyte PAi 1.0% 1.0% 1.0% 1.0% Fluidanov™ 20X 0.0% 0.0% 0.0% 0.0% Myristyl alcohol 2.0% 0.0% 0.0% 0.0% Montanov™ 202 0.0% 2.0% 0.0% 0.0% NaCl 1.0% 1.0% 0.0% 1.0% Water q.s. 100% q.s. 100% q.s. 100% q.s. 100% q.s. 100% q.s. 100%

[0046] - The crosslinked anionic polyelectrolyte PAi is a crosslinked terpolymer with trimethylol propanetriacrylate, comprising for 100 molar, 77.4 molar of monomeric units derived from 2-methyl-2-((l-oxo-2-propenyl) amino) 1-ammonium propanesulfonate, 19.2 molar of monomeric units derived from N,N-dimethyl acrylamide and 3.4 molar of monomeric units derived from tetra-ethoxylated lauryl methacrylate; - Fluidanov™ 20X is a composition comprising 100% by mass of 75.0% 2-octyl dodecanol and 25.0% (2-octyl dodecyl) polyxylosides resulting from the reaction in acidic medium of xylose and 2-octyl dodecanol; - Montanov™ 202 is a composition comprising, by mass, 80.0% (80.0%) of an equimass mixture of behenyl alcohol and arachidyl alcohol, and 20.0% (20.0%) of alkyl polyglucosides resulting from the acidic reaction of glucose with said equimass mixture of behenyl alcohol and arachidyl alcohol. Aqueous gel analysis

[0047] - The appearance of aqueous gels is visually assessed after seven days of storage at 25°C and 45°C; - The viscosities (in mPa·s) of aqueous gels are measured using a Brookfield™ RVT viscometer equipped with spindle 3 at a rotation speed of six revolutions per minute. Acceptable viscosities are between 5,000 mPa·s and 50,000 mPa·s. - The stickiness is determined using a Texas Instruments DHR2™ Rheometer by measuring the adhesion force of a 100-microliter sample of aqueous gel on a PMMA plate placed on a Peltier plate. This measurement is taken during a rotational stress of the upper moving plate on the gel for ten seconds. The normal force (in Newtons) that holds the upper moving plate to the Peltier plate (or adhesion force) is measured during a series of ten compression and rebound movements. Five measurements are taken per gel. The gel's adhesion force must be less than four Newtons to ensure the user does not experience this stickiness upon application to their skin. The analysis results are recorded in Tables 5 and 6 below:

[0048] [Tables5] Aqueous Gels J, A' E' D' IJ Appearance at 7 days at 25°C Homogeneous Appearance at 7 days at 45°C Homogeneous Analyses J, Viscosity (mPa.s) 13.200 5.300 4.300 10.800 11.400 Adhesion strength (N) 3.78 3.60 3.92 3.48 3.73

[0049] [Tableauxô] Aqueous Gels J, FGHT! t2 Appearance at 7 days at 25°C Homogeneous Appearance at 7 days at 45°C Homogeneous Analysis J, Viscosity (mPa.s) 5.300 5.200 5.000 11.200 4.200 Adhesion strength (N) 3.37 3.26 3.06 4.47 4.24

[0050] These results highlight the reduction of the stickiness induced by the presence, within an aqueous gel thickened by a crosslinked anionic polyelectrolyte, of a fatty alcohol or a mixture of fatty alcohols comprising fourteen to twenty-two atoms of carbon or a composition of fatty alcohols and alkyl polyglycosides in the mass ratio (MR) as claimed.

Claims

1. Demands Aqueous gel characterized in that it comprises, for 100% of its mass: • 0.5% to 5.0% by mass of a crosslinked anionic polyelectrolyte (PA) comprising, by 100% molar: • 5.0% to 95.0% molar of monomeric units derived from 2-methyl-2-((1-oxo-2-propenyl)amino)-1-propanesulfonic acid of formula (I) (CH2=CH-C(=O)-NH)-C(CH3)2-S(=O)2-OH, partially or totally salified as an alkali salt or ammonium salt, • 4.9% to 90.0% molar of monomeric units derived from a monomer of formula (II) CH2=CH-C(=O)-N(R4)2, in which R4 represents a linear or branched alkyl radical comprising one to four carbon atoms, and • 0.1% molar at 5.0 mol% of monomeric units from a monomer of formula (III) CH2=C(CH3)-C(=O)-O-(CH2-CH2-O-)nR 5, in which R5 represents a linear or branched alkyl radical comprising eight to twenty carbon atoms and n represents a number greater than or equal to 1 and less than or equal to 20, • from 0.5% by mass to 9.5% by mass: • either an alkanol of formula (IV) Ri-OH, in which Ri represents a linear or branched alkyl radical comprising eight to twenty-two carbon atoms, or a mixture of alkanols of formulas (IV); • either of a composition (C) of alkyl polyglycosides represented by the formulas (V) Ri-O-(G)XH, in which G represents either a remnant of glucose or a remnant of xylose and x represents a decimal number between 1.05 and 2.05, said composition (C) consisting, for 100% molar, of a mixture of ai% molar of

2. compound of formula RrO-(G)iH, a2 molar% of the compound of formula RrO-(G)2-H, a3 molar% of the compound of formula RrO-(G)3-H, a4 molar% of the compound of formula RrO-(G)4-H, and a5 molar% of the compound of formula RrO-(G)5-H, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100 molar% and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x; • either of a mixture (M) of said alkanol of formula (IV) or of said mixture of alkanols of formula (IV) and of said composition (C), • from 0.0% by mass to 3.0% by mass one or more cosmetic active ingredients chosen from the group consisting of retinol, vitamin C, niacinamide (vitamin B3), undecylenoyl phenylalanine, glycolic acid, azelaic acid, hyaluronic acid, a mixture of xylitol, polyglucosides and 1,4-anhydroxylitol and urea, and • the amount of water needed to reach 100% mass, and in that within said aqueous gel, the mass ratio (RM) having as numerator either the mass of said alkanol of formula (IV) or of said mixture of alkanols of formula (IV) or the mass of said composition (C) or the mass of said mixture (M) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.

0. Aqueous gel according to claim 1, characterized in that said cross-linked anionic polyelectrolyte (PA) comprises, per 100% molar: • from 60.0 molar percent to 80.0 molar percent of monomeric units derived from the acid of formula (III), partially salified as an ammonium salt, • from 15.0 molar percent to 39.5 molar percent of monomeric units derived from N,N-dimethyl acrylamide, and • from 0.5 molar% to 5.0 molar% of monomeric units derived from tetra-ethoxylated lauryl methacrylate.

3. Aqueous gel according to any one of claim 1 or 2, characterized in that in the water constituting said aqueous gel, at least one water-soluble salt selected from the group consisting of alkali metal salts, alkaline earth metal salts and transition metal salts is dissolved, such that the total concentration in the water of said at least one water-soluble salt is greater than 0.00 mole per liter and less than or equal to 1.00 mole per liter.

4. An aqueous gel according to any one of claims 1 to 3, characterized in that said alkanol of formula (IV) is 2-octyl dodecanol of formula (IVA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-OH and said composition (C) is a composition (CA) of alkylpolyxylosides of formula (VA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)xH in which GA represents the xylosyl radical or α,[3-D-xylopyranosyl] and x represents a decimal number from 1.05 to 2.05, said composition (CA) consisting, on a 100 mol% basis, of a mixture of α mol% of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)iH, a2 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)2-H, a3 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)3-H, a4 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7 )-CH2-O-( Ga)4-H, and a5 molar% of the compound with formula CH3-(CH2) 9-CH(CH3-(CH2)7)-CH2-O-(Ga)5-H,such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x.,

5. Aqueous gel according to claim 4 characterized in that it comprises a mixture (MA) consisting, for 100% of its mass, of 10.0% by mass to 50.0% by mass of said composition (CA) and of 50.0% by mass to 90.0% by mass of said alkanol of formula (IVA), in a proportion such that the mass ratio (RMA) having as numerator the mass of said mixture (MA) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0 and is more particularly greater than or equal to 1.5 and less than or equal to 5.

0.

6. Aqueous gel according to any one of claims 1 to 3, characterized in that said alkanol of formula (IV) or said mixture of alkanols of formula (IV) is a mixture of alkanols of formula (IVB) RiB-OH in which the radical RiB represents a linear alkyl radical comprising from twenty to twenty-two carbon atoms, and said composition (C) is a composition (CB) of alkyl polyglucosides of formula (VB) RiB-O-(GB)xH, wherein the radical RiB is as defined above, GB represents the glucosyl or α,[3-D-glucopyranosyl] radical, and x represents a decimal number between 1.05 and 2.05, said composition (CB) consisting, for 100 mol%, of a mixture of α mol% of the compound of formula RiB-O-(GB)iH, α2 mol% of the compound of formula RiB-O-(GB)2-H, α3 mol% of the compound of formula RiB-O-(GB)3-H, α4 mol% of the compound of formula RiB-O-(GB)4-H, and α5 mol% of the compound of formula RiB-O-(GB)5-H, such that the sum α% + a2% + a3% + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to lOOx.

7. Aqueous gel according to claim 6, characterized in that it comprises a mixture (MB) consisting, for 100% of its mass, of 50.0% by mass to 90.0% by mass of a mixture of arachidyl alcohol and behenyl alcohol and 10.0% by mass to 50.0% by mass of a composition (CB) of alkyl polyglucosides resulting from the reaction in acid medium of glucose and said mixture of behenyl alcohol and arachidyl alcohol, in a proportion such that the mass ratio (RMB) having as numerator the mass of said mixture (Mb) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0 and is more particularly greater than or equal to 1.5 and less than or equal to 5.

0.

8. A cosmetic skin care process characterized in that it comprises the following successive steps: • a skin cleansing step; • followed by a step of applying to the cleansed skin the aqueous gel as defined in any one of claims 1 to 7, and • - optionally followed by a step of applying to the skin the desired cosmetic skin care formulation.

9. Use of either an alkanol of formula (IV) Ri-OH, in which Ri represents a linear or branched alkyl radical comprising eight to twenty-two carbon atoms, or a mixture of alkanols of formula (IV); or of a composition (C) of alkyl polyglycosides

10. represented by the formulas (V) RrO-(G)xH, in which G represents either a residue of glucose or a residue of xylose and x represents a decimal number between 1.05 and 2.05, said composition (C) consisting, for 100 molar percent, of a mixture of ai% molar of the compound of formula RrO-(G)iH, a2% molar of the compound of formula RrO-(G)2-H, a3% molar of the compound of formula RrO-(G)3-H, a4% molar of the compound of formula (II)4 Ri-O-(G)4-H, and a5% molar of the compound of formula RrO-(G)5-H, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100 molar percent and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to lOOx;either of a mixture (M) of said alkanol of formula (IV) or of said mixture of alkanols of formula (IV) and of said composition (C), said use being characterized in that it is for the purpose of reducing or eliminating the sticky effect felt when applying to the skin an aqueous gel comprising, for 100% of its mass, from 0.5% by mass to 5.0% by mass, a cross-linked anionic polyelectrolyte (PA) comprising, for 100% molar, from 5.0% molar to 95.0% molar, monomeric units derived from 2-methyl-2-((1-oxo-2-propenyl)amino)-l-propanesulfonic acid of formula (I) (CH2=CH-C(=O)-NH)-C(CH3)2- S(=O)2-OH, partially or totally salified in the form of an alkali salt or an ammonium salt; from 4.9 mol% to 90.0 mol% of monomeric units derived from a monomer of formula (II) CH2=CH-C(=O)-N(R4)2 in which IG represents a linear or branched alkyl radical comprising one to four carbon atoms;and from 0.1 mol% to 5.0 mol% of monomeric units derived from a monomer of formula (III) CH2 =C(CH3)-C(=O)-O-(CH2-CH2-O-)n-R5, in which R5 represents a linear or branched alkyl radical comprising eight to twenty carbon atoms and n represents a number greater than or equal to 1 and less than or equal to 20.; Use according to claim 9, characterized in that said cross-linked anionic polyelectrolyte (PA) comprises, for 100 mol%, 60.0 mol% to 80.0 mol% of monomeric units derived from the acid of formula (I), partially salified as an ammonium salt, 15.0 mol% to 39.5 mol% of monomeric units derived from N,N-dimethyl acrylamide, and 0.5% molar at 5.0 molar% of monomeric units derived from tetra-ethoxylated lauryl methacrylate.

11. Use according to any one of claims 9 or 10, characterized in that said alkanol of formula (IV) is 2-octyl dodecanol of formula (IVA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-OH and said composition (C) is a composition (CA) of alkylpolyxylosides of formula (VA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)xH in which GA represents the xylosyl radical or α,[3-D-xylopyranosyl] and x represents a decimal number from 1.05 to 2.05, said composition (CA) consisting, on a 100 mol% basis, of a mixture of α mol% of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)iH, a2 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)2-H, a3 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)3-H, a4 molar% of the compound with formula CH3-(CH2)9-CH(CH3-(CH2)7 )-CH2-O-( Ga)4-H, and a5 molar% of the compound with formula CH3-(CH2) 9-CH(CH3-(CH2)7)-CH2-O-(GA)5-H,such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x.,

12. Use according to claim 11, of a mixture (MA) consisting of, for 100% of its mass, 10.0% by mass to 50.0% by mass of said composition (CA) and 50.0% by mass to 90.0% by mass of said alkanol of formula (IVA).

13. Use according to any one of claims 9 or 10, characterized in that said alkanol of formula (IV) or said mixture of alkanols of formula (IV) is a mixture of alkanols of formula (IVB) RiB-OH in which the radical RiB represents a linear alkyl radical comprising from twenty to twenty-two carbon atoms, and said composition (C) is a composition (CB) of alkyl polyglucosides of formula (VB) RiB-O-(GB)xH, in which the radical R[B] is as defined above, GB represents the glucosyl or α,[3-D-glucopyranosyl radical, and x represents a decimal number from 1.05 to 2.05, said composition (CB) consisting, on a 100 mol% basis, of a mixture of α mol% of the compound of formula RiB-O-(GB)iH, α2 mol% of the compound of formula RiB-O-(GB)2-H, a3 mol% of the compound with formula R1B-O-(Gb)3-H, a4 mol% of the compound with formula RiB-O-(GB)4-H and a5 molar % of the compound of formula RiB-0-(GB)5-H, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x.

14. Use according to claim 13, of a mixture (MB) consisting of, for 100% of its mass, 50.0% by mass to 90.0% by mass of a mixture of arachidyl alcohol and behenyl alcohol and 10.0% by mass to 50.0% by mass of a composition (CB) of alkyl polyglucosides resulting from the reaction in acid medium of glucose and said mixture of behenyl alcohol and arachidyl alcohol.

15. A method for reducing or eliminating the sticky feeling experienced when applying to the skin an aqueous gel comprising, by mass, 0.5% to 5.0% of a cross-linked anionic polyelectrolyte (PA) comprising, by mass, 5.0% to 95.0% of monomeric units derived from 2-methyl-2-((l-oxo-2-propenyl)amino)-1-propanesulfonic acid of formula (I) (CH2=CH-C(=O)-NH)-C(CH3)2-S(=O)2-OH, partially or totally salted as an alkali salt or ammonium salt; from 4.9 mol% to 90.0 mol% of monomeric units derived from a monomer of formula (II) CH2=CH-C(=O)-N(R4)2, in which R4 represents a linear or branched alkyl radical comprising one to four carbon atoms; and from 0.1 mol% to 5.0 mol% of monomeric units derived from a monomer of formula (III) CH2=C(CH3)-C(=O)-O-(CH2-CH2-O-)n-R5,wherein R5 represents a linear or branched alkyl radical comprising eight to twenty carbon atoms and n represents a number greater than or equal to 1 and less than or equal to 20, characterized in that the composition of this aqueous gel is modified, before its application to the skin, by adding either an alkanol of formula (IV) Ri-OH, in which Ri represents a linear or branched alkyl radical comprising eight to twenty-two carbon atoms, or a mixture of alkanols of formula (IV), or a composition (C) of alkyl polyglycosides represented by the formulas (V) Ri-O-(G)XH, in which G represents either a glucose residue or a xylose residue and x represents a decimal number between 1.05 and 2.05, said composition (C) consisting, for 100% molar, of a mixture of α molar% of the compound of formula RrO-(G)iH, α2 molar% of the compound of formula RrO-(G)2-H, a3% molar, of the compound of formula RrO-(G)3-H, a4 molar% of the compound of formula RrO-(G)4-H, and a5 molar% of the compound of formula Rr O-(G)5-H, such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100 molar% and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x; be a mixture (M) of said alkanol of formula (IV) or of said mixture of alkanols of formula (IV) and of said composition (C), in a proportion such that the mass ratio (RM) within the aqueous gel thus modified, having as numerator either the mass of said alkanol of formula (IV) or of said mixture of alcohols of formula (IV), or the mass of said composition (C), or the mass of said mixture (M) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0 and more particularly, greater than or equal to 1.5 and less than or equal to 5.

0.

16. A process according to claim 15, characterized in that said crosslinked anionic polyelectrolyte (PA) comprises, for 100 mol%, from 60.0 mol% to 80.0 mol% of monomeric units derived from the acid of formula (I), partially salified as an ammonium salt, from 15.0 mol% to 39.5 mol% of monomeric units derived from N,N-dimethyl acrylamide, and from 0.5 mol% to 5.0 mol% of monomeric units derived from tetraethoxylated lauryl methacrylate.

17. A process according to any one of claims 15 or 16, characterized in that said alkanol of formula (IV) is 2-octyl dodecanol of formula (IVA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-OH and said composition (C) is a composition (CA) of alkylpolyxylosides of formula (VA) CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)xH, in which GA represents the xylosyl radical or α,[3-D-xylopyranosyl] and x represents a decimal number from 1.05 to 2.05, said composition (CA) consisting, on a 100 mol% basis, of a mixture of α mol% of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)iH, a2 molar% of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)2-H, a3 molar% of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(GA)3-H, a4 molar% of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)4-H, and a5 molar% of the compound of formula CH3-(CH2)9-CH(CH3-(CH2)7)-CH2-O-(Ga)5-H, such that the sum a1% + a2% + a3

18.

19.

20. % + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to lOOx. A process according to claim 17, characterized in that the composition of said aqueous gel is modified before its application to the skin, by adding thereto a mixture (MA) consisting of, for 100% of its mass, 10.0% by mass to 50.0% by mass of said composition (CA) and 50.0% by mass to 90.0% by mass of said alkanol of formula (IVA), in a proportion such that within said aqueous gel thus modified, the mass ratio (RMA) having as numerator the mass of said mixture (MA) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1.0 and less than or equal to 10.0 and is more particularly greater than or equal to 1.5 and less than or equal to 5.

0. A process according to any one of claims 15 or 16, characterized in that said alkanol of formula (IV) or said mixture of alkanols of formula (IV) is a mixture of alkanols of formula (IVB) RiB-OH in which the radical RiB represents a linear alkyl radical comprising from twenty to twenty-two carbon atoms, and said composition (C) is a composition (CB) of alkyl polyglucosides of formula (VB) RiB-O-(GB)xH, in which the radical RiB is as defined above, GB represents the glucosyl or α,[3-D-glucopyranosyl] radical and x represents a decimal number from 1.05 to 2.05, said composition (CB) consisting, for 100% molar, of a mixture of α molar% of the compound of formula RiB-O-(GB)iH, α2 molar% of the compound of formula RiB-O-(GB)2-H, α3% molar percentage of the compound with formula R1B-O-(Gb)3-H, a4 molar percentage of the compound with formula RiB-O-(GB)4-H and a5 molar percentage of the compound with formula RiB-O-(GB)5-H,such that the sum ai% + a2% + a3% + a4% + a5% is equal to 100% molar and the sum ai% + 2a2% + 3a3% + 4a4% + 5a5% is equal to 100x., A process according to claim 19, characterized in that the composition of said aqueous gel is modified, before its application to the skin, by adding thereto a mixture (MB) consisting, for 100% of its mass, of 50.0% by mass to 90.0% by mass of a mixture of arachidyl alcohol and behenyl alcohol and of 10.0% by mass to 50.0% by mass of a composition (CB) of alkyl polyglucosides resulting from the reaction in acidic medium of glucose and said alcohol mixture behenyl and arachidyl alcohol, in such a proportion that within said aqueous gel thus modified, the mass ratio (MR) having as numerator the mass of said mixture (MB) and as denominator, the mass of said crosslinked anionic polyelectrolyte (PA), is greater than or equal to 1 and less than or equal to 10 and is more particularly greater than or equal to 1.5 and less than or equal to 5.0.