FR2935608A1 - Cosmetic composition, useful for cleaning, cleansing and/or exfoliating skin, comprises, exothermic metal salt e.g. calcium chloride, and emulsifying silicone elastomer comprising oxyalkylenated-/glycerol chain, in anhydrous medium - Google Patents

Abstract

Cosmetic composition (I) comprises, at least one exothermic metal salt and at least one emulsifying silicone elastomer in an anhydrous medium. An independent claim is included for cosmetic process of cleansing and/or cleaning and/or exfoliation of the skin, comprising moistening the skin, applying (I) on the skin, massaging and rinsing the skin.

Description

Cosmetic composition with a heating effect comprising a silicone elastomer

The subject of the present invention is an anhydrous cosmetic composition, comprising a metal salt and an emulsifying silicone elastomer, and the uses of said composition in the cosmetic field, in particular for cleaning and / or removing make-up and / or scrubbing the skin.

It is known to use exothermic anhydrous cosmetic compositions, that is to say having a heating effect when applied to the skin. The heating products can contain different raw materials which, in the presence of water, give off heat. Such raw materials include, for example, polyols such as glycerol and glycols, salts such as calcium chloride or magnesium sulfate, or zeolites. Polyols alone give a hot effect that is low. The salts or the zeolites are effective alone or in combination with the polyols, but it is nevertheless necessary to incorporate in the compositions a high percentage of salts (for example 10 to 30%) in order to have a satisfactory hot effect. that is to say an increase of 10 ° C to 30 ° C during the humidification by adding water or when applied to the wet skin. Unfortunately, the salts are known to destabilize the cosmetic compositions, in particular they break the compositions in the form of gels which then liquefy or out of phase. Indeed, it has been found that many gelling agents of cosmetic compositions, and in particular celluloses, carboxyvinyl polymers such as carbomers, alkyl acrylate polymers, vegetable gums, give gels which are destabilized in the presence of large amount, or give gels which, in the presence of salts, become unconventional, that is to say that the gels are sticky and viscous, therefore unacceptable for cosmetic use. Also known are heating effect compositions comprising an inorganic salt and in relatively large amounts, and optionally fillers such as silica, which have a satisfactory heating effect but lack comfort in use because they can leave on the skin a touch rough after rinsing.

Also, there remains the need for a cosmetic composition based on exothermic salts to obtain a satisfactory warm effect when applied to the skin, being stable over time and comfortable to use. The Applicant has surprisingly found that the use of an emulsifying silicone elastomer in a composition comprising an exothermic metal salt makes it possible to obtain a composition which is stable and has a satisfactory hot effect and makes it possible to obtain an improved feel. The invention thus relates to a cosmetic composition comprising, in an anhydrous medium, at least one exothermic metal salt and at least one emulsifying silicone elastomer.

The composition of the invention is exothermic, that is to say that it has a heating effect, and therefore that the user feels a heating during the application of said composition on wet or moistened skin. It is a composition whose temperature in the presence of water (water added during use or water present in the skin) can rise several degrees (one to twenty degrees) instantly. This heating effect will allow the opening of the pores of the skin and therefore a better cleaning of the skin. In addition, the composition has good cosmetics and leaves after application to the skin and rinse, a soft, not rough.

The composition according to the invention consists of an anhydrous medium. By anhydrous is meant here an almost anhydrous medium, that is to say generally comprising less than 6% by weight of water, preferably less than 4% by weight of water, and even more preferably less than 1% by weight. of water relative to the total weight of the composition. It is preferably completely anhydrous and therefore free of water.

The composition of the invention being a cosmetic composition and therefore intended for topical application, it comprises a physiologically acceptable medium, that is to say compatible with the skin, the mucous membranes and / or the keratinous fibers.

The composition of the invention is homogeneous and stable over time. It is generally in the form of a translucent to opaque gel, but it can also be in the form of cream, paste and even powder if all the constituents used are powdery, said powder can be used as is or in a sponge or else impregnated on a support such as a wipe.

Exothermic metal salts The metal salts used in the present invention are salts with exothermic properties, i.e., releasing heat when moistened. They are chosen in particular from alkaline earth metal salts, magnesium salts and mixtures thereof. As alkaline earth metal salts, mention may in particular be made of calcium salts and, more particularly, calcium halides such as iodide, chloride and calcium bromide. It is preferably calcium chloride.

As magnesium salts, mention may be made in particular of magnesium sulphate. It is also possible to use a mixture of several salts.

According to a preferred embodiment of the invention, the exothermic metal salt is selected from magnesium sulfate, calcium chloride and mixtures thereof.

The amount of salt (s) metal (s) may range for example from 0.1 to 50% by weight, preferably from 5 to 40% by weight and preferably from 10 to 30% by weight relative to the total weight of the composition. Emulsifying silicone elastomer By "silicone elastomer" is meant a partially or fully crosslinked organopolysiloxane, a flexible and deformable material having viscoelastic properties. Its modulus of elasticity is such that this material resists deformation and has limited capacity for extension and contraction. This material is able to recover its original shape after stretching.

The emulsifying silicone elastomer used according to the invention is a crosslinked elastomeric organopolysiloxane comprising at least one hydrophilic chain, this chain possibly being oxyalkylenated or glycerolated. The emulsifying silicone elastomer may therefore be chosen from silicone elastomers comprising at least one oxyalkylenated chain and / or a glycerolated chain.

The silicone elastomer comprising at least one oxyalkylenated chain may be obtained in particular by addition reaction and crosslinking of a diorganopolysiloxane containing at least two hydrogens each bonded to a silicon (Al), and a polyoxyalkylene having at least two ethylenically unsaturated groups (B1), in particular in the presence of a catalyst (C1), in particular platinum catalyst, as for example described in documents US-A-5,236,986 and US-A-5,412,004.

The compound (Al) is the base compound for the formation of organopolysiloxane elastomer, and the crosslinking is carried out by addition reaction of the compound (Al) with the compound (B1) in the presence of the catalyst (Cl).

The compound (B1) is advantageously an oxyethylenated and / or oxypropylenated compound comprising at least two vinyl groups in the α-w position of the silicone chain, which will react with Si-H bonds of the compound (Al). The compound (B1) may in particular be a polyoxyalkylene (in particular polyoxyethylene and / or polyoxypropylene) with dimethylvinylsiloxy terminations.

The organic groups bonded to the silicon atoms of the compound (Al) can be alkyl groups having from 1 to 18 carbon atoms, such as methyl, ethyl, propyl, butyl, octyl, decyl, dodecyl (or lauryl), myristyl, cetyl stearyl; substituted alkyl groups such as 2-phenylethyl, 2-phenylpropyl, 3,3,3-trifluoropropyl; aryl groups such as phenyl, tolyl, xylyl; substituted aryl groups such as phenylethyl; and substituted monovalent hydrocarbon groups such as an epoxy group, a carboxylate ester group, or a mercapto group.

The compound (Al) can thus be chosen from trimethylsiloxy-terminated methylhydrogenpolysiloxanes, trimethylsiloxy-terminated dimethylsiloxanemethylhydrogensiloxane copolymers, dimethylsiloxane-methylhydrogensiloxane cyclic copolymers, and trimethylsiloxy-terminated dimethylsiloxane-methylhydrogensiloxane-laurylmethylsiloxane copolymers.

The compound (Cl) is the catalyst for the crosslinking reaction, and is especially chosen from chloroplatinic acid, chloroplatinic acid-olefin complexes, chloroplatinic acid-alkenylsiloxane complexes, chloroplatinic acid-diketone complexes, platinum black, and platinum on support.

The catalyst (Cl) is preferably added in an amount of from 0.1 to 1000 parts by weight, more preferably from 1 to 100 parts by weight, as a clean platinum metal per 1000 parts by weight of the total amount of the compounds (Al). ) and (B1).

In particular, the silicone elastomer comprising at least one oxyalkylenated chain may be obtained by reaction of polyoxyalkylene (in particular polyoxyethylene and / or polyoxypropylene) with dimethylvinylsiloxy terminations and of trimethylsiloxy-terminated methylhydrogenpolysiloxane, in the presence of platinum catalyst.

The silicone elastomer comprising at least one oxyalkylenated chain used according to the invention is preferably a silicone elastomer comprising at least one oxyethylenated chain.

In addition, the silicone elastomer comprising at least one oxyalkylenated chain is preferably transported in gel form in at least one hydrocarbon oil and / or a silicone oil. In these gels, the elastomer comprising at least one oxyalkylenated chain is often in the form of non-spherical particles.

Polyoxyalkylenated silicone elastomers are described in US Pat. No. 5,236,986, US Pat. No. 5,412,004 and US Pat. No. 5,837,793 and US Pat. No. 5,811,487, the contents of which are incorporated by reference.

Silicone elastomers comprising at least one oxyethylenated chain may be used in particular those marketed by Shin Etsu under the names: KSG-21 (27% active ingredient) INCI name: Dimethicone / PEG-10 Dimethicone vinyl dimethicone crosspolymer), 25 - KSG-20 (100% active ingredient, INCI name: PEG-10 Dimethicone Crosspolymer), - KSG-210 (25% active ingredient INCI name: Dimethicone / PEG-10/15 crosspolymer) X-22-6146 (at 32% active ingredient, INCI name: Dimethicone / PEG-10 dimethicone vinyl dimethicone crosspolymer), or those marketed by Dow Corning under the names: DC9010 (at 11% by weight) INCI name: PEG-12 dimethicone crosspolymer) - DC9011 (at 9% active ingredient).

These products are generally in the form of oily gels containing the silicone elastomer particles. KSG-210 (INCI name: Dimethicone / PEG-10/15 crosspolymer) which is 25% active material of silicone elastomer in silicone oil is preferably used.

The emulsifying silicone elastomer may also be chosen from silicone elastomers comprising at least one glycerolated chain.

The silicone elastomer comprising at least one glycerolated chain may be obtained in particular by addition reaction and crosslinking of a diorganopolysiloxane containing at least one silicon-bonded hydrogen (A2) and a polyglycerolated compound having ethylenically unsaturated groups ( B2), especially in the presence of catalyst (C2), especially platinum catalyst.

In particular, the organopolysiloxane may be obtained by reaction of dimethylvinylsiloxy-terminated polyglycerol compound and trimethylsiloxy-terminated methylhydrogenpolysiloxane in the presence of platinum catalyst.

The compound (A2) is the base compound for the formation of organopolysiloxane elastomer, and the crosslinking is carried out by addition reaction of the compound (A) with the compound (B2) in the presence of the catalyst (C2).

The compound (A2) is in particular an organopolysiloxane having at least 2 hydrogen atoms bonded to distinct silicon atoms in each molecule. Compound (A2) may have a viscosity at 25 ° C ranging from 1 to 50,000 centistokes, in particular to be well miscible with compound (B2).

The organic groups bonded to the silicon atoms of the compound (A2) may be alkyl groups having from 1 to 18 carbon atoms, such as methyl, ethyl, propyl, butyl, octyl, decyl, dodecyl (or lauryl), myristyl, cetyl stearyl; substituted alkyl groups such as 2-phenylethyl, 2-phenylpropyl, 3,3,3-trifluoropropyl; aryl groups such as phenyl, tolyl, xylyl; substituted aryl groups such as phenylethyl; and substituted monovalent hydrocarbon groups such as an epoxy group, a carboxylate ester group, or a mercapto group. Preferably, said organic group is chosen from methyl, phenyl and lauryl groups.

The compound (A2) may thus be chosen from trimethylsiloxy-terminated methylhydrogenpolysiloxanes, trimethylsiloxy-terminated dimethylsiloxanemethylhydrogenosiloxane copolymers, dimethylsiloxane-methylhydrogensiloxane cyclic copolymers, trimethylsiloxy-terminated dimethylsiloxanemethylhydrogensiloxane-laurylmethylsiloxane copolymers.

The compound (B2) may be a polyglycerolated compound corresponding to the following formula (B'2):

Where m is an integer ranging from 2 to 6, n is an integer ranging from 2 to 200, preferably from 2 to 100, preferably from 2 to 200, preferably from 2 to 200, preferably from 2 to 200, preferably from 2 to 200, preferably from 2 to 200, preferably from 2 to 200, preferably from 2 to 200, preferably from 2 to 200; at 50, better from 2 to 20, even better from 2 to 10, and even more preferably from 2 to 5, and in particular n is 3; Gly denotes: -CH2-CH (OH) -CH2-O- or -CH2-CH (CH2OH) -O- Advantageously, the sum of the number of ethylenic groups per molecule of the compound (B2) and the number of atoms of hydrogen bonded to silicon atoms per molecule of the compound (A2) is at least 4.

It is advantageous that the compound (A2) is added in an amount such that the molecular ratio between the total amount of hydrogen atoms bonded to silicon atoms in the compound (A2) and the total amount of all the groups to Ethylenic unsaturation in the compound (B2) is in the range of 1: 1 to 20: 1.

The compound (C2) is the catalyst of the crosslinking reaction, and is especially chosen from chloroplatinic acid, chloroplatinic acid-olefin complexes, chloroplatinic acid-alkenylsiloxane complexes, chloroplatinic acid-diketone complexes, platinum black, and platinum on support.

The catalyst (C2) is preferably added in an amount of from 0.1 to 1000 parts by weight, more preferably from 1 to 100 parts by weight, as clean platinum metal per 1000 parts by weight of the total amount of the compounds (A2 ) and (B2).

The silicone elastomer comprising at least one glycerolated chain, used according to the invention is generally in the form of a gel mixed with at least one hydrocarbon oil and / or a silicone oil. In these gels, the elastomer comprising at least one glycerolated chain is often in the form of non-spherical particles.

Such elastomers are described in particular in document WO-A-2004/024798.

A silicone elastomer comprising at least one glycerolated chain may be that sold by Shin Etsu under the name KSG-710 (25% active ingredient, INCI name: Dimethicone / Polyglycerin-3 Crosspolymer).

Preferably, the amount (of active material) of silicone elastomer (s) emulsifying in the composition of the invention ranges from 0.05 to 20% by weight, better still from 0.1 to 15% by weight. weight, preferably from 0.15 to 10% by weight and more preferably from 0.2 to 7% by weight relative to the total weight of the composition.

Polyols According to a preferred embodiment of the invention, the composition of the invention additionally contains at least one polyol which complements the exothermic action of the salts.

As polyols, mention may in particular be made of polyols having at least 2 hydroxyl groups and at least 3 carbon atoms, such as glycerine, diglycerine, and glycols such as propylene glycol, dipropylene glycol, butylene glycol, hexylene glycol, polyethylene glycol and polyethylene glycols with a molecular weight of less than 600 such as PEG-8 (or Polyethylene 400), sugars such as sorbitol, and mixtures thereof.

As polyols, glycerol, butylene glycol, propylene glycol, dipropylene glycol, PEG-8 and mixtures thereof are preferably used.

The amount of polyol (s) depends on the amount of salts present in the composition and the desired heating effect. It may range, for example, from 0.5 to 80% by weight, preferably from 5 to 75% by weight, better still from 10 to 70% by weight and even more preferably from 20 to 65% by weight and even more preferably from 30 to 60% by weight. % by weight relative to the total weight of the composition.

According to one embodiment, the composition comprises at least one silica selected from hydrophilic silicas, hydrophobic silicas and mixtures thereof. The amount of silica (s) may range, for example, from 0.1 to 20% by weight, preferably from 0.5 to 10% by weight and better still from 1 to 5% by weight relative to the total weight of the composition.

Hydrophilic silica in the present application is understood to mean both pure hydrophilic silicas and particles coated with hydrophilic silica.

The hydrophilic silicas that can be used in the composition of the invention are preferably amorphous, and they may be of pyrogenic origin or of precipitated origin.

They are generally in powder form.

The fumed silicas are obtained by pyrolysis in continuous flame at 1000 ° C of silicon tetrachloride (SiCl4) in the presence of hydrogen and oxygen.

The precipitated silicas are obtained by reaction of an acid with alkali silicate solutions, preferably sodium silicate.

According to a preferred embodiment of the invention, the hydrophilic silica is chosen from silicas having a specific surface area of 30 to 500 m 2 / g, and a number average particle size ranging from 3 to 50 nm. These are more particularly hydrophilic silicas described in Tables (1) and (2) below, and mixtures thereof.

Table (1) Name AEROSIL 90 AEROSIL 130 AEROSIL 150 AEROSIL 200 commercial (Company (Company (Company (Degussa-Hüls Company) Degussa-Hüls) Degussa-Hüls) Degussa-Hüls) Mode Pyrogenation Pyrogenation Pyrogenation Generation pyrogenation Surface BET 90 15 130 25 150 15 200 15 (m2 / g) Size 20 16 14 12 average particle size (nm) Note size of aggregates: 10-30 and 200 p Table (2) Name AEROSIL 300 AEROSIL 380 AEROSIL OX 50 SILICA FK 320 commercial ( Company (Company (Degussa-Hüls, Degussa-Hüls) Degussa-Hüls) (Degussa-Hüls Company) Pyrogenation Pyrogenation Pyrogenation Production Precipitation BET 300 30 380 30 50 25 170 25 (m2 / g) Size 7 7 40 Particle means (nm) The hydrophilic silica that can be used in the composition of the invention may also consist of a particle totally or partially covered with silica, in particular a mineral particle totally or partially covered with silica, the silica beads containing titanium oxide, sold under the name TORAYCERAM S-IT by the company Toray; silica-alumina microspheres containing titanium oxide (size: 105), sold under the name ZLIGHT-SPHERE W 10128 by Zeelan; amorphous precipitated synthetic silica / titanium oxide particles (size: 106-500), sold under the name NEOSIL PC20S by Crosfield; nylon-6-silica-titania fibers (2 mm long and 2 denier thick), sold under the name FIBERLON Y2 by Wackherr; silica coated with titanium dioxide and coated with porous silica (85/5/10) (size: 0.6), sold under the name ACS-0050510 by SACI-CFPA; anatase titanium nano-oxide treated alumina and 40% silica in water (size: 60 nm, monodisperse), sold under the name MIRASUN TIW 608 by Rhodia Chimie CRA; anatase titanium nano-oxide (60 nm) coated with silica / alumina / cerium IV 15/5/3 in a 32% aqueous dispersion, sold under the name MIRASUN TIW 1608 by the company Rhodia Chimie CRA; anatase titanium nano-oxide treated alumina and silica (34 / 4.3 / 1.7) in a 40% aqueous dispersion, sold under the name Tioveil AQ-N by the company Uniqema; silica-coated titanium nano-oxide (66/33) (titanium dioxide granulometry: 30 nm, silica thickness: 4 nm), sold under the name MAXLIGHT TS-04 by Nichimen Europe PLC; and silica-coated titanium nano-oxide (80/20) (titanium dioxide granulometry: 30 nm; silica thickness: 2 nm) sold under the name MAXLIGHT TS-042 by Nichimen Europe PLC.

Pyrogenic silicas, and in particular those sold under the names AEROSIL (INCI name: silica) and especially those sold under the name AEROSIL 200 by the company Degussa-Hüls, are preferably used as hydrophilic silica.

The amount of hydrophilic silica (s) may range, for example, from 0.1 to 10% by weight, preferably from 0.5 to 5% by weight and better still from 1 to 3% by weight relative to the total weight. of the composition.

Hydrophobic silica in the present application is understood to mean both pure hydrophobic silicas and particles coated with hydrophobic silica. The hydrophobic silicas that can be used in the composition of the invention are preferably amorphous and of pyrogenic origin. They are preferably in powder form.

The amorphous hydrophobic silicas of pyrogenic origin are obtained from hydrophilic silicas. These are obtained by pyrolysis in continuous flame at 1000 ° C of silicon tetrachloride (SiCl4) in the presence of hydrogen and oxygen. They are then rendered hydrophobic by treatment with halogenated silanes, alkoxysilanes or silazanes. Hydrophobic silicas differ from hydrophilic starting silicas by, inter alia, lower silanol group density and smaller water vapor adsorption.

According to a preferred embodiment of the invention, the hydrophobic silica is chosen from silicas having a specific surface area of 50 to 500 m 2 / g, and a number average particle size ranging from 3 to 50 nm. It is more particularly the hydrophobic silicas described in Table (3) below, and their mixtures.

Table (3) Name AEROSIL AEROSIL AEROSIL AEROSIL AEROSIL commercial R202 R805 R812 R972 R974 (Company (Company (Company (Company15 Degussa- Degussa- Degussa- Degussa- Degussa- Hüls) Hüls) Hüls) Hüls) Surface BET 90 20 The average particle size (nm) The hydrophobic silica used in the composition of the invention may also consist of a particle totally or partially covered with silica, in particular of a mineral particle totally or partially covered with hydrophobic silica, such as pigments and metal oxides covered with hydrophobic silica. These particles may also have optical properties in the product as on the skin, for example they may have a mattifying or slightly whitening effect.

The hydrophobic silica used is preferably a hydrophobic fumed silica treated surface-treated with a dimethylsiloxane, such as that marketed under the name AEROSIL R974 (INCI name: Silica Dimethyl Silylate) by the company Degussa-Hüls.

The amount of hydrophobic silica (s) may range, for example, from 0.1 to 10% by weight, preferably from 0.5 to 5% by weight and better still from 1 to 5% by weight relative to the total weight. of the composition.

According to one embodiment, the composition according to the invention comprises at least one hydrophilic silica and at least one hydrophobic silica, as described above. Anhydrous Medium The composition according to the invention preferably comprises an oily medium comprising at least one oil. The amount of oil (s) may range, for example, from 1 to 80% by weight, preferably from 1 to 50% by weight, more preferably from 1 to 30% by weight relative to the total weight of the composition. The oil may for example be provided by the emulsifying silicone elastomer when it is in the form of a mixture with a hydrocarbon oil and / or a silicone oil.

The term "oil" means a fatty substance that is liquid at room temperature (25 ° C.).

As oils that can be used in the composition of the invention, mention may be made, for example, of: hydrocarbon-based oils of vegetable origin, such as liquid triglycerides of fatty acids containing from 4 to 10 carbon atoms, such as triglycerides of heptanoic acids or octanoic or, for example, sweet almond, sunflower, maize, soya, squash, coriander, grape seed, sesame, hazelnut, apricot (Prunus Armenica Cil), macadamia , arara, rUniqeman, avocado, triglycerides of caprylic / capric acids such as those sold by the company Stearineries Dubois or those sold under the names Miglyol 810, 812 and 818 by the company Dynamit Nobel, jojoba oil , shea butter oil; esters and synthetic ethers, in particular of fatty acids, such as the oils of formulas R'COOR2 and R'OR2 in which R 'represents the residue of a fatty acid containing from 8 to 29 carbon atoms, and R2 represents a hydrocarbon chain, branched or unbranched, containing from 3 to 30 carbon atoms, for example Purcellin oil or 660084 PCL-LIQUID from SYMRISE (a mixture of cetylstearyl ethyl 2 hexanoate and myristate of isopropyl), isononyl isononanoate, isopropyl myristate, isopropyl palmitate, 2-ethylhexyl palmitate (octyl palmitate), octyl-2-dodecyl stearate, octyl-2-dodecyl erucate, isostearyl isostearate; hydroxylated esters such as isostearyl lactate, octyl hydroxystearate, octyldodecyl hydroxystearate, diisostearyl malate, triisocetyl citrate, heptanoates, octanoates, decanoates of fatty alcohols; polyol esters, such as propylene glycol dioctanoate, neopentyl glycol diheptanoate and diethylene glycol diisononanoate; and pentaerythritol esters such as pentaerythrityl tetraisostearate; linear or branched hydrocarbons of mineral or synthetic origin, such as paraffin oils, volatile or not, and their derivatives, petroleum jelly, polydecenes, hydrogenated polyisobutene such as Parleam oil; fatty alcohols having from 8 to 26 carbon atoms, such as cetyl alcohol, stearyl alcohol and their mixture (cetearyl alcohol), octyldodecanol, 2-butyloctanol, 2-hexyldecanol, 2-undecylpentadecanol, oleic alcohol or linoleic alcohol; partially fluorinated hydrocarbon oils and / or silicone oils such as those described in document JP-A-2-295912. As fluorinated oils, mention may also be made of perfluoromethylcyclopentane and perfluoro-1,3-dimethylcyclohexane, sold under the names "FLUTEC PC1" and "FLUTEC PC3" by BNFL Fluorochemicals; perfluoro-1,2-dimethylcyclobutane; perfluoroalkanes such as dodecafluoropentane and tetradecafluorohexane, sold under the names "PF 5050" and "PF 5060" by the company 3M, or bromoperfluorooctyl sold under the name "Foralkyl" by the company Atochem; nonafluoromethoxybutane sold under the name "MSX 4518" by the company 3M and nonafluoroethoxyisobutane; perfluoromorpholine derivatives, such as 4-trifluoromethyl perfluoromorpholine sold under the name "PF 5052" by the company 3M; silicone oils such as volatile or non-volatile polymethylsiloxanes (PDMS) with a linear or cyclic silicone chain, which are liquid or pasty at room temperature, in particular cyclopolydimethylsiloxanes (cyclomethicones) such as cyclohexasiloxane and cyclopentasiloxane; polydimethylsiloxanes comprising alkyl, alkoxy or phenyl groups, during or at the end of the silicone chain, groups having from 2 to 24 carbon atoms; phenyl silicones such as phenyltrimethicones, phenyldimethicones, phenyltrimethylsiloxydiphenylsiloxanes, diphenyl-dimethicones, diphenylmethyl-diphenyltrisiloxanes, 2-phenylethyltrimethylsiloxysilicates, and polymethylphenylsiloxanes; - their mixtures.

The term "hydrocarbon-based oil" in the list of oils mentioned above, any oil predominantly comprising carbon and hydrogen atoms, and optionally ester, ether, fluoro, carboxylic acid and / or alcohol groups.

Preferably the composition comprises at least one silicone volatile, chosen from those described above.

When the composition of the invention is used as a makeup-removing composition, it preferably contains at least one makeup-removing oil, to which one or more other cleansing oils may be added or not. Cleansing oils may be chosen in particular from branched hydrocarbons of mineral origin such as hydrogenated polyisobutene, the fatty acid esters described above, and mixtures thereof. As fatty acid esters that can be used as makeup-removing oils, mention may be made more particularly of ethyl hexyl palmitate, ethyl hexyl stearate, isopropyl myristate, isopropyl palmitate, isobutyl palmitate and caprate. / pentaerythritol caprylate, cetearyl isononanoate, isodecyl isononanoate, isononyl isononanoate, isotridecyl isononanoate, 2-ethylhexyl caprate / caprylate, and mixtures thereof.

In addition to the oils mentioned above, the composition of the invention may contain other fatty substances, such as fatty acids having 8 to 30 carbon atoms, such as stearic acid; silicone resins such as trifluoromethyl-C1-4-alkyldimethicone and trifluoropropyldimethicone; silicone gums (INCI name: Dimethiconol) alone or in admixture with a silicone oil, such as the product marketed by Dow Corning under the name Dow Corning 1501 Fluid, which is a mixture of dimethiconol and cyclopentasiloxane in a proportion of 14. , 7 / 85.3. (dimethiconol); waxes, for example mineral waxes, waxes of animal origin, such as beeswax, waxes of plant origin, hydrogenated oils which are concretes at 25 ° C., fatty esters and concrete glycerides at 25 ° C. synthetic waxes such as polymethylene wax, silicone waxes; and their mixtures.

Additives The composition may, in addition, contain one or more other additives, especially lipophilic additives, conventionally used in cosmetic compositions, in particular in cleaning or make-up removing compositions.

Exothermic compounds other than salts and polyols, for example zeolites which are silicoaluminates, may be mentioned in particular. Examples of zeolites that may be mentioned are activated zeolites, for example zeolites A, zeolites X, such as those sold by the companies Fluka and Union Carbide, MAP zeolites as described in document EP-A-384070, activated zeolites A as described in document EP-A-187912 and in particular those sold under the name Advera 401 N and Advera 402N by the company PQ Corporation.

Surfactants may also be mentioned as additives; the perfumes ; conservatives ; antioxidants; sequestering agents the charges ; dyes, cosmetic or dermatological active agents, or mixtures thereof. These adjuvants are used in the usual proportions of the cleaning and / or care compositions, and for example from 0.01 to 10% of the total weight of the composition. These adjuvants must be of a nature and used in such quantity that they do not disturb the properties desired for the composition of the invention.

According to a particular embodiment of the invention, the composition according to the invention contains, as fillers, exfoliating particles which will allow the exfoliation of the skin. As exfoliating particles, it is possible to use exfoliating or exfoliating particles of mineral, vegetable or organic origin. Thus, it is possible to use, for example, the balls or the polyethylene powder, such as those sold under the name Microthene MN 727 or Microthene MN 710-20 by the company Equistar or the powder marketed under the name Gotalene 120 Incolore 2 by the Dupont company. ; nylon particles such as those sold by Arkema under the name Orgasol 2002 EXD NAT COS; fibers such as polyamide fibers, such as those sold by the company Utexbel under the name Polymamide PULP 12185 SIZE 0.3 MM; polyvinyl chloride powder; pumice stone (INCI name: pumice) such as Eyraud's pumice 3 / B; hulls of crushed fruit stones such as crushed apricot kernels or nut hulls; sawdust; glass beads; alumina (aluminum oxide) (INCI name: Alumina), such as the product marketed under the name Dermagrain 900 by Marketech International, sugar crystals; beads which melt during application to the skin, such as, for example, spheres based on mannitol and cellulose sold under the names Unisphères by Induchem, agar capsules sold under the names Primasponge by the Cognis company, and spheres based on jojoba esters marketed under the names Florasphères by Floratech; and their mixtures.

The composition according to the invention may also contain other fillers such as, for example, talc, modified starch or not, and in particular the starches esterified with octenylsuccinic anhydride and more particularly the "Aluminum Starch octenyl succinate" such that the product marketed by National Starch under the name Dry-Flo ,.

These fillers (exfoliants and others) may be present in an amount ranging for example from 0.5 to 20% by weight, preferably from 1 to 15% by weight, better still from 1 to 10% and even more preferably from 2 to 5% by weight. by weight relative to the total weight of the composition.

As active agents, mention may be made of any active care or cleaning agent usually used in the cosmetic field, and in particular antibacterials such as octopirox and triclosan, keratolytic agents such as salicylic acid, lactic acid or acid. glycolic, essential oils, vitamins such as vitamin C (ascorbic acid, vitamin A (retinol), vitamin PP (niacinamide), vitamin B3 (panthenol) and their derivatives.

The composition of the invention is particularly suitable for cleaning and / or removing makeup from the skin and / or mucous membranes and more particularly for cleaning and / or removing make-up and / or peeling of the skin. The subject of the invention is also the cosmetic use of the composition as defined above, for cleaning and / or removing make-up and / or peeling of the skin.

The composition of the invention may be generally in the form of a cream or a gel. In use, the composition is applied to the skin (especially the skin of the face), preferably in a thick layer, then the hands are moistened and the face is massaged with wet hands. You can rewet hands and massage the face again. We finish by rinsing the face. Another method is to first moisten the skin, then apply the composition to the wet skin and massage the face, after or without wetting the hands.

Thus, another subject of the invention is a cosmetic process for removing make-up and / or cleaning and / or scrubbing of the skin, consisting in moistening the skin, applying to the skin the composition as defined above, to massage and rinse the skin ..

The invention also relates to a cosmetic process for removing make-up and / or cleaning the skin, which consists in applying to the skin the composition as defined above, wetting hands, massaging the face with wet hands. and rinsing the skin.

The composition according to the invention may also be conveyed on a support such as a wipe.

The following examples are given for illustrative and not limiting in order to better highlight the characteristics of the invention. The quantities are given in% by weight.

EXAMPLE 1 Cleaning Cleansing Composition - PEG-8 53 35 - Glycerin 5 - Hydrophobic Silica (AEROSIL R974) 2 - Hydrophilic Silica (AEROSIL 200) 15 - Cyclopentasiloxane / Dimethiconol (Dow Corning 1501 Fluid) (Binder) 15 - Magnesium Sulphate Blend and water (98/2) 20 - KSG-210 25% active ingredient 2 - PEG-7 caprylic / capric glycerides Procedure: Cyclopentasiloxane / Dimethiconol and KSG-210 were mixed with Raynerie stirring, then PEG-8 and glycerol are then introduced, and the hydrophobic silica, then the hydrophilic silica and the magnesium sulphate are added successively by mixing after each addition. The mixture was homogenized with Raynerie until a white, creamy composition was obtained.

This product gives a very noticeable warm effect and makes it possible to obtain a good cleaning of the skin. After rinsing, the skin is soft to the touch. EXAMPLE 2 Heating Cleansing Composition

- PEG-8 53 - Glycerin 5 - Cyclopentasiloxane / Dimethiconol (Dow Corning 1501 Fluid) (binder) 15 - Magnesium sulfate mixture and water (98/2) 20 - KSG-210 25% active ingredient 5 - PEG- 7 caprylic / capric glycerides 2

The procedure is analogous to that of Example 1. The product obtained was a whitish gel, which gives a very noticeable warm effect and makes it possible to obtain a good cleansing of the skin and is comfortable to use.

Example 3: Cleaning heating composition

- PEG-8 48 - Glycerin 5 - Cyclopentasiloxane / Dimethiconol (Dow Corning 1501 Fluid) (binder) 15 35 - Magnesium sulfate mixture and water (98/2) 20 - KSG-210 25% active ingredient 10 - PEG- Caprylic / capric glycerides The procedure is analogous to that of Example 1.

The product obtained was a whitish cream, which gives a very noticeable warm effect and makes it possible to obtain a good cleansing of the skin.

Claims (16)

REVENDICATIONS1. Cosmetic composition comprising in an anhydrous medium, at least one exothermic metal salt and at least one emulsifying silicone elastomer. 2. Composition according to claim 1, characterized in that the exothermic metal salt is selected from alkaline earth metal salts, magnesium salts and mixtures thereof. 10 3. Composition according to claim 1 or 2, characterized in that the exothermic metal salt is chosen from calcium halides. 4. Composition according to any one of the preceding claims, characterized in that the exothermic metal salt is selected from magnesium sulphate, calcium chloride and mixtures thereof. 5. Composition according to any one of the preceding claims, characterized in that the amount of metal salt (s) exothermic (s) ranges from 0.1 to 50% by weight relative to the total weight of the composition. 6. Composition according to any one of the preceding claims, characterized in that the emulsifying silicone elastomer is chosen from silicone elastomers comprising at least one oxyalkylenated chain and / or a glycerolated chain. 25 7. Composition according to any one of the preceding claims, characterized in that the silicone elastomer comprising at least one oxyalkylenated chain is obtained by addition reaction and crosslinking of diorganosiloxane containing at least one silicon-bonded hydrogen and a polyoxyalkylene having at least two ethylenically unsaturated groups, in the presence of a catalyst. 30 8. Composition according to any one of the preceding claims, characterized in that the emulsifying silicone elastomer is a silicone elastomer comprising at least one oxyethylenated chain. 35 9. Composition according to claim 6, characterized in that the silicone elastomer comprising at least one glycerolated chain is obtained by addition reaction and crosslinking of diorganosiloxane containing at least one silicon-bonded hydrogen and 20 polyglycerolated compounds having ethylenic unsaturation in the presence of catalyst. 10. Composition according to any one of the preceding claims, characterized in that the amount of active materials of emulsifying silicone elastomer (s) ranges from 0.05 to 20% by weight, better still from 0.1 to 15% by weight, preferably from 0.15 to 10% by weight and more preferably from 0.2 to 7% by weight relative to the total weight of the composition. 11. Composition according to any one of the preceding claims, characterized in that it further contains at least one polyol. 12. Composition according to the preceding claim, characterized in that the polyol is chosen from glycerine, diglycerine, propylene glycol, dipropylene glycol, butylene glycol, hexylene glycol, polyethylene glycol and polyethylene glycols of molecular weight. less than 600, sugars and mixtures thereof. 13. Composition according to any one of the preceding claims, characterized in that the amount of polyol (s) ranges from 0.5 to 90% by weight and preferably from 5 to 75% by weight relative to the total weight of the composition. 14. Cosmetic use of the composition according to one of the preceding claims for cleaning and / or removing make-up and / or peeling of the skin. 15. A cosmetic process for removing make-up and / or cleaning and / or scrubbing the skin, consisting in moistening the skin, applying to the skin the composition according to any one of claims 1 to 13, massaging and rinsing the skin. skin. 16. A cosmetic process for removing make-up and / or cleaning and / or scrubbing the skin, comprising applying to the skin the composition according to any one of claims 1 to 13, wetting the hands, massaging the face with the skin. wet hands, and rinse the skin.