FR2913334A1 - Cosmetic composition, useful for cleaning and/or make up removing and/or scrubbing of the skin, comprises exothermal metallic salt, hydrophilic silica and hydrophobic silica - Google Patents

Abstract

Cosmetic composition comprises at least an exothermal metallic salt, at least hydrophilic silica and at least hydrophobic silica, in anhydrous medium. An independent claim is included for a cosmetic process of cleaning, make up removing and/or scrubbing of the skin comprising applying the composition on the skin to moisturizing the skin, massaging the skin and rinsing the skin, or applying the composition on the skin, wetting the hand, massaging the face with the hand and rinsing the skin.

Description

Cosmetic composition with heating effect

  The subject of the present invention is an anhydrous cosmetic composition, comprising a metal salt, a hydrophilic silica and a hydrophobic silica, and the uses of said composition in the cosmetic field, in particular for cleaning and / or removing make-up and / or scrubbing the skin. 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 applying on 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, there remains the need for a cosmetic composition containing a sufficient amount of salts to have a warm effect during application to the skin, while being stable over time.

  The Applicant has found, surprisingly, that the addition of two silicas of different natures makes it possible to obtain a gel containing salts, which is stable and which has a satisfactory hot effect. Thus, the invention relates to a cosmetic composition. comprising, in an anhydrous medium, at least one exothermic metal salt, at least one hydrophilic silica and at least one hydrophobic silica.

  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.

  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 in particular be made 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.

  Hydrophilic Silica The composition may contain one or more hydrophilic silicas. 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.

  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 a continuous flame at 1000 ° C. of silicon tetrachloride (SiCl 4) 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 the hydrophilic silicas described in Tables (1) and (2) below, and mixtures thereof.

  Table (1) 25 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 aggregate size: 10-30 and 200 p Table (2) Name AEROSIL 300 AEROSIL 380 AEROSIL OX 50 SILICE FK 320 commercial (Company (Company (Degussa-Hüls DS Degussa-Hüls) Degussa-Hüls) (Company Degussa-Hüls Mode Pyrogenation Pyrogenation Pyrogenation Production Precipitation Surface BET 300+ 30 380+ 30 50+ 25 170+ 25 (m2 / g) Average particle size (nm) The hydrophilic 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 covered totally or partially silica, t it that 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 Z-Light-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) marketed 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.

  Hydrophobic Silica The composition may contain one or more hydrophobic silicas. 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.

  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. The latter are obtained by pyrolysis in a continuous flame at 1000 ° C. of silicon tetrachloride (SiCl 4) 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 (Company (Degussa-Degussa- Degussa- Degussa- Degussa- Hüls) Hüls) Hüls) Hüls) Surface BET 90 + The average particle size (nm) The hydrophobic silica used in the composition of the invention may also consist of a particle covered completely or in part. partially silica, especially 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. Polyols According to a preferred embodiment of the invention, the composition of the invention also contains at least one polyol because the polyols supplement 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.

  Anhydrous Medium The composition according to the invention preferably comprises an oily medium comprising at least one oil. The amount of oil (s) can range, for example, from 5 to 80% by weight, preferably from 10 to 60% by weight, better still from 10 to 40% by weight relative to the total weight of the composition.

  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 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.

  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); silicone elastomers such as those marketed under the names KSG by Shin-Etsu; waxes, for example mineral waxes, waxes of animal origin, such as beeswax, waxes of vegetable origin, hydrogenated oils at 25 ° C., fatty esters and concrete glycerides at 25 ° C., waxes synthetic materials 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 is generally in the form of 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 rubbed 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 on the wet skin and massage the face, after or not moistened hands. Thus, the subject of the invention is also a cosmetic process for removing make-up and / or cleaning and / or scrubbing the skin, consisting in moistening the skin, to be applied to the skin, the composition as defined above, to massage and rinse the skin ..

  The subject of the invention is also a cosmetic process for removing make-up and / or cleaning the skin, consisting in applying to the skin the composition as defined above, wetting the hands, massaging the face with the hands. wet, and rinse the skin.

  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 46.5 20 - Glycerin 5 - Hydrophobic Silica (AEROSIL R974) 2 - Hydrophilic Silica (AEROSIL 200) 1 - Perfume 0.3 - Cyclopentasiloxane / Dimethiconol (Dow Corning 1501 Fluid) (Binder ) 27 25 - Magnesium sulfate 14.7 - Polyethylene powder (Gotalene 120 Colorless 2) 1.5 - Alumina (Dermagrain 900) 2

  Procedure: PEG-8 and glycerin were mixed, added successively with mixing after each addition, the hydrophobic silica, the Cyclopentasiloxane / Dimethiconol mixture, then the hydrophilic silica and the magnesium sulfate. The mixture was homogenized with Raynerie, and then the alumina, the polyethylene powder and the perfume were added. We mixed well.

  The procedure is carried out in a cold manner, which makes it possible to add even thermosensitive active ingredients without fearing their degradation. The product obtained was a whitish gel having a viscosity of approximately 20 cps (viscosity measured with Rheomat 180 at 25 ° C. , mobile 3). This gel gives a very noticeable warm effect and makes it possible to obtain a good cleaning of the skin.

  EXAMPLE 2 Cleaning Cleansing Composition - PEG-8 46.5 - Glycerin 5 - Hydrophobic Silicone (AEROSIL R974) 2 - Hydrophilic Silica (AEROSIL 200) 1 - Isohexadecane 12 - Perfume 0.3 - Cyclopentasiloxane / Dimethiconol (Dow Corning 1501 Fluid) (binder) 15 - Magnesium sulfate 14.7 - Polyethylene powder (Gotalene 120 Colorless 2) 1.5 - Alumina (Dermagrain 900) 2

  The procedure is similar 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 cleaning of the skin.

  EXAMPLE 3 Cleaning Cleansing Composition - PEG-8 53.75 0/0 -Glycerin 5% - Hydrophobic Silica (AEROSIL R974) 2 - Hydrophilic Silica (AEROSIL 200) 1 0/0 - Salicylic Acid 0.1 - PEG-7 Caprylic / capric glycerides 2 Perfume 0.15% - Cyclopentasiloxane / Dimethiconol (Dow Corning 1501 Fluid) (binder) 15 - Magnesium sulphate 20 - Polyethylene powder (Gotalene 120 Colorless 2) 1 0/0 35 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 cleaning of the skin. EXAMPLE 4 Cleaning Cleansing Composition - PEG-8 52.25% - Glycerin 5% - Hydrophobic Silicone (AEROSIL R974) (Silica Dimethyl Silylate) 2 - Hydrophilic Silica (AEROSIL 200) (Silica) 1 0/0 - PEG 7 caprylic / capric glycerides 2 - Cyclopentasiloxane / Dimethiconol (Dow Corning 1501 Fluid) (Binder) 15 - Magnesium Sulfate 20 - Mannitol / Cellulose / Ultramarines / Tocopheryl Acetate / 2 Hydroxypropyl Methylcellulose (Unispheres NT-2102 from Induchem) - Polyethylene Powder (Gotalene 120 Colorless 2) 0.75% The procedure is analogous to that of Example 1. The product obtained was a whitish gel, which gives a very noticeable hot effect and makes it possible to obtain a good cleaning of the skin.

Claims (17)

  1. Cosmetic composition comprising in an anhydrous medium, at least one exothermic metal salt, at least one hydrophilic silica and at least one hydrophobic silica.   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.   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 exothermic metal salt (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 amount of silica (s) hydrophilic (s) ranges from 0.1 to 10% by weight relative to the total weight of the composition.   7. Composition according to any one of the preceding claims, characterized in that the hydrophilic silica is chosen from pyrogenic silicas.   8. Composition according to any one of the preceding claims, characterized in that the amount of hydrophobic silica (s) ranges from 0.1 to 10% by weight relative to the total weight of the composition.   9. Composition according to any one of the preceding claims, characterized in that the hydrophobic silica is a hydrophobic fumed silica treated on the surface with a dimethylsiloxane.   10. Composition according to any one of the preceding claims, characterized in that it further contains at least one polyol. 10 25   11. 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 molecular polyethylene glycols. less than 600, sugars and mixtures thereof.   12. 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.   13. Composition according to any one of the preceding claims, characterized in that the anhydrous medium comprises at least one oil.   14. Composition according to any one of the preceding claims, characterized in that it is in the form of a gel,   15. 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. 20   16. 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 14, massaging and rinsing the skin. skin.   17. A cosmetic process for removing make-up and / or cleansing and / or scrubbing of the skin, comprising applying to the skin the composition according to any one of claims 1 to 14, wetting the hands, massaging the face with wet hands, and rinse off the skin.