FR2935264A1 - CLEANSING COMPOSITION COMPRISING A VOLATILE FATTY PHASE. - Google Patents

Abstract

The subject of the invention is a cosmetic process for removing makeup or for cleaning keratin materials, comprising applying to the keratin materials a composition comprising at least one volatile linear alkane comprising from 7 to 17 carbon atoms. The composition according to the invention is effective for removing makeup and has good eye comfort. It can be used in particular for removing makeup from the skin and / or the ocular area.

Description

Cleansing composition comprising a volatile fatty phase

The subject of the invention is a cosmetic process for removing makeup or for cleaning keratin materials, comprising applying to the keratin materials a composition comprising at least one volatile linear alkane comprising from 7 to 17 carbon atoms.

The removal of makeup from the skin is very important for the care of the face. It must be as efficient as possible because fatty residues such as excess sebum, the remains of daily cosmetics and make-up products, accumulate in skin folds and on the surface of the skin, and they can clog the pores of the skin and cause the appearance of pimples. Poor make-up and cleansing, and particularly poor rinsing, are often responsible for other causes, such as a cloudy complexion.

Nowadays, consumers demand that makeup products have an increasingly long-lasting hold: waterproof mascaras, long-lasting and non-transferable foundation, lipsticks that hold all day, and to remove these products , it is necessary to use more and more effective formulations, which make it possible to clean the skin while respecting it, that is to say without attacking it.

Cleansing compositions may be in the form of an optionally biphasic lotion, a milk, a cream, an oil or a gel. To make it easier to remove make-up, it is known, for example, to use volatile oils such as fatty esters as described in document EP-A-651990. These esters make it possible to dissolve lipophilic soils and make-up easily, in particular waterproof and transfer-free make-ups, which are reputed to be difficult to remove. However, these esters can give the user a feeling of greasiness and put a veil on the eyes when used in makeup removal.

Also known are makeup removers based on volatile oils such as hydrocarbon oils (in particular isododecane and / or isohexadecane) or silicone oils such as cyclomethicone.

The Applicant has surprisingly discovered that the use of particular linear linear volatile alkanes makes it possible to improve the cleansing efficiency of compositions comprising them.

The subject of the present invention is therefore a cosmetic process for removing makeup or for cleaning keratin materials, comprising applying to the keratin materials a composition comprising at least one volatile linear alkane comprising from 7 to 17 carbon atoms.

The composition of the process according to the invention is intended for topical application and therefore contains a physiologically acceptable medium. By physiologically acceptable medium is meant a medium compatible with keratin materials, ie the skin, the mucous membranes (including the interior of the eyelids and the lips), the nails and / or the keratinous fibers (hair and eyelashes).

The volatile linear alkane used in the process according to the invention allows a good makeup removing keratin materials and especially the skin or the ocular area (eyelashes, eyelids). It allows for example a good removal of the mascara found on the eyelashes, the eyeliner on the eyelids and the foundation on the skin. It especially allows a good make-up removal of water-resistant make-up products, especially so-called waterproof mascaras.

By volatile is meant a compound capable of evaporating on contact with the skin in less than one hour, at room temperature and atmospheric pressure. The volatile oil is a volatile cosmetic oil which is liquid at ambient temperature, in particular having a non-zero vapor pressure, at ambient temperature and atmospheric pressure, in particular having a vapor pressure ranging from 0.13 Pa to 40 000 Pa (10 300 mm Hg), and preferably ranging from 1.3 Pa to 13 000 Pa (0.01 to 100 mm Hg), and preferably ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mm Hg), and preferably ranging from 1.3 Pa to 1300 Pa (0.01 to 100 mm Hg), and preferably ranging from 1.3 Pa to 1300 Pa (0.01 to 10 mm Hg), mm Hg).

Volatile linear alkane The volatile linear alkanes according to the invention comprise from 7 to 17 carbon atoms, in particular from 9 to 15 carbon atoms, and more particularly from 11 to 13 carbon atoms. The volatile linear alkanes according to the invention may advantageously be of plant origin.

Such alkanes can be obtained, directly or in several stages, from a vegetable raw material such as an oil, a butter, a wax, etc.

As examples of volatile linear alkanes that are suitable for the invention, mention may be made of those described in the patent application of Cognis WO 2007/068371.

These alkanes are obtained from fatty alcohols, themselves obtained from coconut oil or palm oil.

By way of example of a volatile linear alkane which is suitable for the invention, mention may be made of n-nonane (C9), n-decane (C10), n-undecane (C11) and n-dodecane (O12). , n-tridecane (C13), n-tetradecane (014), n-pentadecane (C15), n-hexadecane (016) and n-heptadecane (017), and mixtures thereof. Preferably, the n-undecane: n-tridecane weight ratio is in the range of from 50:50 to 90:10, preferably from 60:40 to 80:20, and in particular from 65:35 to 75: In particular, a composition of the invention may comprise a mixture of n-undecane and n-tridecane in a weight ratio of 70:30.

According to a particularly preferred form, a mixture of undecane (C11) and tridecane (013) will be used, such as the product marketed under the reference CETIOL UT by Cognis.

The composition of the invention may comprise from 2% to 90% by weight of volatile linear alkane (s), more preferably from 5% to 70% by weight, in particular from 15% to 60% by weight, by weight. relative to the total weight of the composition.

The composition according to the invention may comprise, in addition to the volatile linear alkane, one or more additional organic oils or solvents.

Additional oil or solvent

The additional oils or solvents may be volatile or non-volatile and may be chosen from silicone, hydrocarbon or fluorinated oils.

For example, hydrocarbon-based volatile oils having 8 to 16 carbon atoms and mixtures thereof and especially 08-20 branched alkanes, such as

isoalkanes (also known as isoparaffins) to C8-C16i isododecane, isodecane, isohexadecane and for example the oils sold under the trade names Isopar or Permethyl, branched esters of 8-C16 as isohexyl neopentanoate and their mixtures; isododecane or isohexadecane is preferably used.

As non-volatile oils, mention may be made of: hydrocarbon oils of mineral or synthetic origin, such as linear or branched hydrocarbons, such as paraffin oil or its derivatives, liquid petrolatum, polydecenes, hydrogenated polyisobutene such as Parléam marketed by the company Nippon Oil Fats, squalane of synthetic or vegetable origin; hydrocarbon-based vegetable oils based on triglycerides consisting of esters of fatty acids and of glycerol, the fatty acids of which may have various chain lengths, the latter possibly being linear or branched, saturated or unsaturated, in particular triglycerides of fatty acid, in particular of 4 to 22 carbon atoms, such as the triglycerides of heptanoic, octanoic acids, and capric / caprylic acids or else the hydroxylated triglycerides, such as sweet almond, calophyllum and palm oil; , grape seed, sesame, arara, rapeseed, sunflower, cotton, apricot, castor oil, alfalfa, squash, blackcurrant, macadamia, muscat rose, hazelnut, coriander avocado, jojoba, olive, cereal sprouts (corn, wheat, barley, rye), shea butter; fatty acid esters, in particular from 4 to 22 carbon atoms, and in particular octanoic acid, heptanoic acid, lanolic acid, oleic acid, lauric acid, stearic acid, propylene glycol dioctanoate, propylene glycol monoisostearate, polyglyceryl diisostearate, neopentyl glycol diheptanoate; synthetic esters of formula RICOOR 2 in which R 1 represents the residue of a linear or branched higher fatty acid containing from 7 to 40 carbon atoms and R 2 represents a branched hydrocarbon-based chain containing from 3 to 40 carbon atoms, for example Purcellin oil (cetostearyl octanoate), isononyl isononanoate, alcohol benzoate in 012 to 015i ethyl 2-hexyl palmitate, octyl-2 dodecyl stearate, erucate 2-octyl dodecyl, isostearyl isostearate, 2-octyldodecyl benzoate, octanoates, decanoates or ricinoleates of alcohols or polyalcohols, isopropyl myristate, isopropyl palmitate, butyl stearate , hexyl laurate, diisopropyl adipate, 2-ethylhexyl palmitate, 2-hexyl-decyl laurate, 2-octyl decyl palmitate, 2-octyldodecyl myristate, 2-diethylhexyl, diisostearyl malate, isodecyl neopentanoate; hydroxylated esters such as isostearyl lactate, octylhydroxystearate, hydroxystearate

octyldodecyl, diisostearyl malate, triisocetyl citrate, glycerin triisostearate or diglycerine; diethylene glycol diisononanoate; pentaerythritol esters; esters of aromatic acids and alcohols comprising 4 to 22 carbon atoms, in particular tridecyl trimellitate; higher C8-C26 fatty acids, such as myristic acid, oleic acid, linoleic acid, linolenic acid or isostearic acid; higher C8-C26 fatty alcohols such as oleic alcohol, linoleic or linolenic alcohol, isostearyl alcohol or octyl dodecanol; synthetic ethers containing at least 7 carbon atoms; silicone oils such as polydimethylsiloxanes (PDMS) which are liquid at room temperature, linear, optionally phenylated, such as phenyl trimethicones, phenyl trimethylsiloxy diphenylsiloxanes, diphenyl dimethicones, diphenyl methyldiphenyl trisiloxanes, liquid 2-phenylethyl trimethylsiloxysilicates, optionally substituted with aliphatic and / or aromatic groups such as alkyl, alkoxy or phenyl groups, during and / or at the end of the silicone chain, groups containing from 2 to 24 carbon atoms and optionally fluorinated, or by functional groups such as hydroxyl groups, thiol groups and / or amine; polysiloxanes modified with fatty acids, fatty alcohols or polyoxyalkylenes such as dimethicone copolyols or alkylmethicone copolyols; liquid fluorinated silicones; - and their mixtures.

In particular, the additional oil may be chosen from so-called cleansing oils, such as: the branched hydrocarbons described above and in particular branched hydrocarbons, of mineral or synthetic origin, such as, in particular, isoparaffin, isohexadecane, isododecane, hydrogenated polyisobutene such as Parleam oil. the fatty acid esters preferably chosen from esters obtained from a linear or branched chain alcohol having from 1 to 17 carbon atoms and from a linear or branched chain fatty acid having from 3 to 18 and preferably from 12 to 17 carbon atoms, for example ethyl hexyl palmitate, ethyl hexyl stearate, isopropyl myristate, isopropyl palmitate, isobutyl palmitate, caprate / caprylate of pentaerythritol, cetearyl isononanoate, isodecyl isononanoate, isononyl isononanoate, isotridecyl isononanoate, 2-ethylhexyl caprate / caprylate, isostearyl neopentanoate, isononanoate isononyl, hexyl laurate short chain esters such as dicaprylyl carbonate

a short chain ether such as dicaprylyl ether.

The amount of additional oil (s) may vary depending on whether the composition is in emulsion, biphase or anhydrous form. It may range, for example, from 0.1% to 90% by weight, relative to the total weight of the composition, preferably from 0.5% to 60% by weight, and preferably ranging from 1% to 40% by weight. relative to the total weight of the composition.

According to one embodiment, the composition comprises less than 10% by weight, preferably less than 5% by weight, and better still less than 2% by weight of additional oil. It may be free of additional oil.

The oily phase, comprising all of the volatile or non-volatile oils, including the additional oils of the composition according to the invention, may represent from 10% to 100% by weight, for example from 15% to 100% by weight relative to to the total weight of the composition, depending on the type of galenic

The composition according to the invention may be in the form of an emulsion, a biphase composition or an anhydrous composition.

The term "anhydrous composition" means a composition which contains less than 2% by weight of water, or even less than 0.5% of water relative to the total weight of the composition, or in particular a composition which is free of water, water not being added during the preparation of the composition but corresponding to the residual water provided by the mixed ingredients.

When the composition according to the invention is an emulsion or a biphase composition, it comprises an aqueous phase and an oily phase. The emulsions and the biphase compositions are distinguished by the fact that the biphase compositions consist of two phases which, at rest, are distinct instead of being emulsified one in the other. The use of these two-phase compositions requires prior stirring to form an extemporaneous emulsion, it must be of sufficient quality and stability to allow a uniform application of the two phases, but such that at rest, said phases separate quickly and regain their initial state, this phenomenon being better known by the term "phase shift". These two-phase compositions are described, for example, in EP-A-370856 and EP-A-603080. In

on the other hand, the emulsions comprise two phases, an aqueous phase and an oily phase, one of the phases being dispersed in the other in a stable manner.

Aqueous phase When the composition according to the invention contains an aqueous phase, it contains water and may contain any water-soluble or water-dispersible additive. The water used may be demineralised pure water but also mineral water and / or thermal water and / or sea water, that is to say that the water of the composition may be partly or wholly constituted by a water chosen from mineral waters, thermal waters, sea waters and their mixtures. In general, a mineral water is suitable for consumption, which is not always the case of a thermal water. Each of these waters contains, inter alia, solubilized minerals and / or trace elements. These waters are known to be used for specific treatment purposes depending on the particular trace elements and minerals they contain, such as hydration and desensitization of the skin. By mineral or thermal waters, not only natural mineral or thermal waters will be designated, but also natural mineral or thermal waters enriched with mineral constituents and / or additional trace elements, as well as mineral and / or oligo-containing aqueous solutions. -Elements prepared from purified water (demineralized or distilled).

A natural thermal or mineral water used according to the invention may, for example, be selected from Vittel water, the waters of the Vichy basin, Uriage water, Roche Posay water, water the Bourboule, the water of Enghien-les-Bains, the water of Saint Gervais-les-Bains, the water of Néris-les-Bains, the water of Allevar-les-Bains, the water of Digne, the water of Maizières, the water of Neyrac-les-Bains, the water of Lons-le-Saunier, the Good Waters, the water of Rochefort, the water of Saint Christau, the water of Fumes and water from Tercis-les-Bains, Avene water.

You can also use seawater such as Dead Sea water or seabed water.

The aqueous phase may also comprise water-miscible organic solvents (at 25 ° C.), for example primary alcohols (C1-C3 monohydric alcohol), such as ethanol and isopropanol, and polyols such as propylene. glycol, butylene glycol, glycerine, hexylene glycol, polyethylene glycols such as PEG-8, dipropylene glycol and mixtures thereof. The amount of polyol (s) in the composition of the invention is

preferably such that it does not confer tackiness on the final composition. This amount is generally from 0.05 to 20% by weight and preferably from 0.1 to 15% by weight and better still from 0.5 to 10% by weight relative to the total weight of the composition.

When the composition is in the form of an emulsion, it may be a water-in-oil (EH) or oil-in-water (O / W) emulsion, or a multiple emulsion (E / H / E or H / E / H). The weight ratio between the aqueous phase and the oily phase may for example be from 10/90 to 95/5, and preferably from 30/70 to 90/10. Thus, the aqueous phase may for example represent from 10 to 95% by weight, preferably from 30 to 90% by weight, better still from 60 to 90% by weight relative to the total weight of the composition, and the oily phase may represent for example from 5 to 90% by weight, preferably from 10 to 70% by weight, better still from 10 to 40% by weight relative to the total weight of the composition.

When the composition is in the form of a biphase, the weight ratio between the aqueous phase and the oily phase is preferably from 25/75 to 90/10 and preferably 30/70 to 70/30. The aqueous phase therefore generally represents from 25 to 90% by weight, preferably from 30 to 70% by weight and better still from 40 to 60% by weight relative to the total weight of the composition.

The composition of the invention may also comprise one or more surfactants. The amount of surfactant may vary to a large extent but is limited in practice for reasons of tolerance. It also depends on the type of compositions (emulsion or other). The amount of surfactant (s) (active material) is preferably from 0.01 to 15% by weight, more preferably from 0.02 to 10% by weight and more preferably from 0.05 to 50% by weight relative to to the total weight of the composition.

Any surfactant that is normally used in makeup-removing compositions can be used as surfactant. The surfactant may be chosen from nonionic surfactants, anionic surfactants, amphoteric or zwitterionic surfactants and mixtures thereof.

As surfactants that can be used in the composition according to the invention, mention may be made of: (1) among the nonionic surfactants: oxyethylenated oxypropylene block polymers such as Poloxamers and especially Poloxamer 184 (CTFA name);

sorbitan fatty acid esters and their oxyethylenated derivatives, such as sorbitan monostearate (CTFA name: Sorbitan stearate) sold by ICI under the name Span 60, sorbitan monopalmitate (CTFA name: Sorbitan palmitate) sold by the ICI company under the name Span 40, oxyethylenated sorbitan stearates, palmitates and oleates (CTFA name: Polysorbate) sold by the company ICI under the names Tween, in particular Polysorbate 60 (Tween 60), Polysorbate 65 (Tween 65) Polysorbate 80 (Tween 80); oxyethylenated ethers of dihydrocholesterol such as Dihydrocholeth-15, Dihydrocholeth-20 and Dihydrocholeth-30; alkylpolyglycosides and in particular alkylpolyglucosides (APG) having an alkyl group containing from 6 to 30 carbon atoms (C 6 -C 30 alkyl polyglucosides) and preferably 8 to 16 carbon atoms, for example decylglucoside (C 9 -alkyl); C11-polyglucoside (1.4) such as the product sold under the name MYDOL 10 by the company Kao Chemicals, the product marketed under the name PLANTAREN 2000 UP or PLANTACARE 2000 UP by the company Cognis, and the product marketed under the name ORAMIX NS 10 by the company Seppic, caprylyl / capryl glucoside, such as the product sold under the name ORAMIX CG 110 by the company Seppic, laurylglucoside, and the products sold under the names PLANTAREN 1200 N and PLANTACARE 1200 by the company Cognis, and coco-glucoside. as the product marketed under the name PLANTACARE 818 / UP by Cognis.

(2) among the anionic surfactants: alkyl sulphates and their salts, alkyl ether sulphates and their salts, especially their sodium salts, such as the mixture of Sodium Laureth Sulfate / Magnesium Laureth Sulfate / Sodium Laureth-8 Sulfate / Magnesium Laureth- Sulfate, sold under the name Texapon ASV by the company Cognis; sodium lauryl ether sulphate (C12-14 70/30) (2.2 OE) sold under the names Sipon AOS 225 or Texapon N702 PATE by the company Cognis; ammonium lauryl ether sulfate (C12-14 70/30) (30E) sold under the name Sipon LEA 370 by Cognis; the ammonium (C12-C14) alkyl ether (9 OE) sold under the name RHODAPEX AB / 20 by the company Rhodia Chimie.

(3) from amphoteric or zwitterionic surfactants, alkylamphoacetates such as N-cocoyl-N-carboxymethoxyethyl-N-carboxymethyl-ethylenediamine N-di-sodium (CTFA name: Disodium cocoampho-diacetate) marketed in saline aqueous solution under the name MIRANOL C2M CONC NP by Rhodia Chimie; N-cocoyl-N-

N-sodium hydroxyethyl-N-carboxymethyl-ethylenediamine (CTFA name: sodium cocampho-acetate); cocamides such as the mixture of coconut acid ethanolamides (CTFA name: Cocamide DEA).

The composition may also include a mixture of two or more of these surfactants.

The composition according to the invention may also contain conventional cosmetic adjuvants or additives which will be in one or the other phase according to their hydrophilic or lipophilic nature, such as, for example, actives, perfumes, preservatives and bactericidal agents, dyes, softeners, buffers, humectants, UV filters (or sunscreens), electrolytes such as sodium chloride or a pH adjuster for example citric acid or sodium hydroxide), and mixtures thereof. Of course, those skilled in the art will take care to choose this or these optional additives and / or their quantity, in such a way that the advantageous properties of the composition according to the invention are not, or not substantially, impaired by the addition envisaged.

As preservatives, any preservative usually used in the fields under consideration, such as, for example, parabens and chlorhexidine digluconate, may be used.

As bactericidal, one can for example use a mono (C3-C9) alkyl-or (C3-C9) alkenyl ether glycerol whose manufacture is described in the literature, in particular in E. Baer, H.O.L. Fischer - J. Biol. Chem. 140-397-1941. Among these mono (C 3 -C 9) alkyl- or (C 3 -C 9) alkenyl ether glycerol, use is preferably made of 3 - [(2-ethylhexyl) oxy] -1,2-propanediol, 3 - [(heptyl) oxy ] -1,2-propanediol, 3 - [(octyl) oxy] -1,2-propanediol and 3 - [(allyl) oxy] -1,2-propanediol. A more particularly preferred mono (C 3 -C 9) alkyl ether of glycerol according to the present invention is 3 - [(2-ethylhexyl) oxy] -1,2-propanediol, sold by SCHULKE & MAYR G.m.b.H. under the trade name SENSIVA SC 50 (INCI name: Ethylhexylglycerin).

As active agents that can be used in the composition of the invention, mention may be made, for example, of soothing agents such as allantoin and bisabolol; floral waters such as linden water or cornflower water; glycyrrhetinic acid and its salts; antibacterials such as octopirox, triclosan and triclocarban; essential oils ; vitamins such as, for example, retinol (vitamin A), ascorbic acid (vitamin C), tocopherol (vitamin E), niacinamide (vitamin PP or B3), panthenol (vitamin B5) and their

derivatives such as, for example, the esters of these vitamins (palmitate, acetate, propionate), magnesium ascorbyl phosphate, glycosylated vitamin C or glucopyranosyl ascorbic acid (Ascorbyl glucoside); coenzymes such as coenzyme Q10 or ubiquinone and coenzyme R or biotin; protein hydrolysates; plant extracts and in particular plankton extracts; and their mixtures.

When the make-up removal composition is a biphase, it may also contain a phase-shift agent, which makes it possible to improve the phase separation rate after stirring.

The following examples are given by way of illustration of the invention and are not limiting in nature. All amounts are given in percentage by weight relative to the total weight of the composition.

EXAMPLES In the examples which follow, the cleansing efficiency of each composition is evaluated according to the following protocol.

Cleansing Efficiency Test The make-up removing tests are performed on false eyelash test specimens (19 mm long black Caucasian straight hair, mounted between two 30 mm by 30 mm plates). 1 or 2 test tubes of hair are made up with L'Oréal Paris Lashes Architect 25 Waterproof mascara by making twice 10 brush passages spaced by 2 min of drying with product recovery between each set of 10. The specimens are allowed to dry. room temperature during a drying time of one hour. The first test specimen was then pinched between the fingers for 5 seconds in a cotton pad soaked with 1 g of composition according to the invention and the second test specimen, if any, was pinched between the fingers for 5 seconds in a cotton pad soaked with 1 g of the comparative composition, then the whole test + cotton is inserted in a press and subjected to a pressure equivalent to that of the fingers now the cotton and the test piece is extracted with a quick gesture of the cotton. The experiment is repeated for each test piece with a clean cotton impregnated again with 1 g of composition according to the invention or comparative composition, and this until complete removal of make-up of the hair band made up.

The evaluation of the cleansing effectiveness consists of counting the number of cottons needed to completely remove the mask of hair made up.

Example 1

The cleansing power of a mixture of undecane / tridecane according to the invention was tested with respect to volatile oils conventionally used in cleansing compositions of the prior art. Number of cottons Undecane-tridecane (*) 3 isododecane 7 isohexadecane 7 paraffin oil 18 (*) Cetiol UT (Cognis)

It is found that the undecane / tridecane mixture used in the composition according to the invention makes it possible to have an improved cleansing power (more than 50% relative to branched alkanes such as isododecane and isohexadecane and more than 80% compared to isoparaffin).

Example 2 and 3 - Make-up milks

A cleansing milk is produced according to the invention comprising a mixture of volatile linear alkanes and a comparative milk comprising isohexadecane. It is verified that the physicochemical characteristics (viscosity, drop size) of these emulsions that may possibly affect the cleansing efficiency are identical.

The compositions are prepared as follows: the polymer is swelled in the aqueous Rayneri phase for 30 minutes at 450 rpm.

The fatty phase is incorporated under Moritz for 15 min at room temperature with stirring between 1500 and 1800 rpm (total duration 30 min) Example 2 Example 3 (Invention) (comparative) Water qs 100 qs 100 Ammonium Acryloyldimethyltaurate / 0.3 0.3 Steareth-8 Methacrylate copolymer 0.06 0.06 (Aristoflex SNC Clariant) 20 Polysorbate 60 3 3 Isohexadecane Undecane / tridecane (*) Sorbitol D [4.3] (m) 17 m 15 m Viscosity (P) 25 26 Rheomat 180, 25 ° C, 200 RPM, Mobile 2 Cleansing efficiency on mascara 11 cottons 8 waterproof cotton (number of cottons) The cleansing milk according to the invention has a significantly greater cleansing efficiency than the cleansing milk comprising isohexadecane.

EXAMPLES 4 AND 5: Biphase Cleansers Example 4 Example 5 (Invention) (Comparative) Phase A 0.1068 0.1068 EDTA Potassium Phosphate 0.4272 0.4272 Potassium Diphosphate 0.2136 0.2136 Sodium Chloride 0.2670 O, 2670 dye 0.0620 0.0620 polyhexamethylene hydrochloride 0.2670 0.2670 biguanide 0.2670 0.2670 Hexylene glycol Procedure: The components of phase A on the one hand and phase B on the other are mixed . Phase A phase B is then added. A product having two distinct phases is obtained one above the other and stirred before use. The cleansing effectiveness of each composition is tested according to the protocol indicated above. EXAMPLE 4 (Invention) (Comparative) Efficacy 11 Cottons 5 Cleansing Cottons on WP Mascara The two-phase makeup remover according to the invention (Example 4) removes more effectively than the composition of Example 5 which comprises a mixture of isohexadecane and cyclohexadimethylsiloxane.

Example 6 and 7: Cleansing oils

The following make-up removing oils are produced: Example 6 Example 7 (Invention) (Comparative) Vaseline oil - 60 Undecane / tridecane (*) 60 - Isopropyl myristate 25 water Decyl glucoside (Oramix NS10 Seppic)

Phase B Isohexadecane Cyclohexadimethylsiloxane Undecane / tridecane (*) qs 100 0.1068 46.60 qs 100 0.1068

18.64 27.96 Sunflower oil 10 10 PEG-20 glyceryl triisostearate 5 5 Cleansing efficacy on mascara 13 cottons 5 cottons WP (*) Cetiol UT (Cognis)

Various constituents are mixed with moderate stirring at 80 ° C. It is found that the makeup-removing oil (Example 6) based on the mixture of undecane / tridecane oils is better makeup remover than that based on Vaseline oil (Example 7).

Claims (7)

REVENDICATIONS1. Cosmetic process for removing make-up or cleaning of keratin materials, comprising applying to the keratin materials a composition comprising at least one volatile linear alkane comprising from 7 to 17 carbon atoms. 2. Method according to claim 1, characterized in that said linear alkane comprises from 9 to 15 carbon atoms, and more particularly from 11 to 13 carbon atoms. 3. Method according to claim 1 or 2, characterized in that said volatile linear alkane is of plant origin. 4. Method according to one of the preceding claims, characterized in that the volatile linear alkane is selected from n-nonane (C9), n-decane (C, o), n-undecane (Cä), n-dodecane (C12), n-tridecane (C, 3), n-tetradecane (C14), n-pentadecane (C5), hexadecane (C16) and n-heptadecane (C) and their mixtures. 5. Process according to any one of the preceding claims, characterized in that the composition comprises a mixture of undecane (C) and tridecane (C13). 6. Method according to claim 5, characterized in that the weight ratio nundecane: n-tridecane is in the range of 50:50 to 90:10, preferably 60:40 to 80:20, and in particular varying from 65: 35 to 75:25. 7. Process according to any one of the preceding claims, characterized in that the composition comprises from 2% to 90% by weight of volatile linear alkane (s), more preferably from 5% to 70% by weight. , in particular from 15 to 60% by weight relative to the total weight of the composition. 10 25 30