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1. WO2020002538 - COMPOSITION COMPRISING A SATURATED FATTY ALCOHOL, AT LEAST ONE FATTY-CHAIN ANIONIC SURFACTANT, A POLYOL AND AT LEAST ONE SILICONE OIL

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CLAIMS

1. Composition, preferably a cosmetic composition, in the form of an oil-in-water emulsion, in which an oily phase is dispersed in an aqueous phase, comprising:

(a) from 2.5% to 7% by weight, relative to the total weight of the composition, of at least one saturated C16-C22 and preferably C16-C18 fatty alcohol;

(b) at least one anionic surfactant including a C16-C22 and preferably C16-C18 hydrocarbon-based chain;

(c) at least one polyol;

(d) at least 60% by weight, relative to the total weight of the oily phase, of at least one silicone oil;

the fatty alcohols (a)/anionic surfactants (b) mass ratio being between 10:1 and 6:4.

2. Composition according to Claim 1 , in which the anionic surfactant(s) contain only one C16-C22 hydrocarbon-based chain.

3. Composition according to Claim 2, in which the difference between the number of carbon atoms in the hydrocarbon-based chain of the anionic surfactant(s) (b) and the number of carbon atoms in the fatty alcohol(s) (a) must not differ by more than 5 carbon atoms, and is preferentially less than or equal to 4.

4. Composition according to any one of Claims 1 to 3, in which the saturated fatty alcohol(s) are chosen from cetyl alcohol or hexadecanol (Ci6), stearyl alcohol or octadecanol (Cis), or behenyl alcohol (C22) which are solid at room temperature and advantageously bear a chain-end -OH group.

5. Composition according to any one of Claims 1 to 4, in which the saturated fatty alcohol(s) are chosen from cetyl alcohol, stearyl alcohol and mixtures thereof such as cetylstearyl alcohol.

6. Composition according to any one of Claims 1 to 5, comprising a mixture of C16 and C18 fatty alcohols, preferably in a C16/C18 mass ratio ranging from 20/80 to 80/20, and advantageously in a C16/C18 mass ratio equal to 50/50.

7. Composition according to any one of Claims 1 to 6, in which the amount of fatty alcohol is between 2.5% and 4.5% by weight and even more preferentially between 2.7% and 4% by weight relative to the total weight of the composition.

8. Composition according to any one of Claims 1 to 7, in which the anionic surfactant(s) including at least one C16-C22 hydrocarbon-based chain are chosen from surfactants comprising at least one sulfonate function, acylglutamates, and mixtures thereof.

9. Composition according to any one of Claims 1 to 8, in which the anionic surfactant(s) including at least one C16-C22 hydrocarbon-based chain are chosen from the surfactants of general formula (I): RCOY(CH )nSC> M in which R represents a saturated, linear or branched C16-22 alkyl group; Y represents -O- or -NRi- with Ri representing a linear or branched C1 -C3 alkyl group; M is chosen from the group formed by hydrogen, alkali metals, alkaline-earth metals, the ammonium group and organic amines; n is an integer ranging from 1 to 3.

10. Composition according to any one of Claims 1 to 9, in which the anionic surfactant including at least one C16-C22 hydrocarbon-based chain is N-stearoyl-N-methyltaurate, with M corresponding to Na.

11. Composition according to any one of Claims 1 to 10, in which the surfactant(s) including at least one C16-C22 hydrocarbon-based chain are present in an amount of between 0.05% and 5% by weight, preferably between 0.1 % and 2% by weight and even more preferentially between 0.1 % and 1.5% by weight relative to the total weight of the composition.

12. Composition according to any one of Claims 1 to 1 1 , in which the fatty alcohol (a)/anionic surfactants (b) mass ratio is between 19/2 and 7/3 and even more preferentially between 9/1 and 4/1.

13. Composition according to any one of Claims 1 to 12, in which the polyol(s) comprise a number of carbon atoms ranging from 2 to 20 and preferably from 2 to 10.

14. Composition according to any one of Claims 1 to 13, in which the polyol(s) comprise from 2 to 12 hydroxyl functions, preferably from 2 to 8 hydroxyl functions.

15. Composition according to any one of Claims 1 to 14, in which the polyols are chosen from ethylene glycol, propylene glycol, 1 ,3-propanediol, isoprene glycol, butylene glycol, dipropylene glycol, polypropylene glycol, glycerol, diglycerol, erythritol, pentaerythritol, arabitol, adonitol, sorbitol, dulcitol, maltitol, panthenol, preferably glycerol, propylene glycol, dipropylene glycol, butylene glycol and 1 ,3-propanediol, and even more preferentially glycerol.

16. Composition according to any one of Claims 1 to 15, in which the polyol(s) are present in an amount of between 20% and 80% by weight, preferably between 20% and 60% by weight, even more preferentially between 20% and 50% by weight, better still between 20% and 40% by weight, and even better still between 25% and 35% by weight relative to the total weight of the composition.

17. Composition according to any one of Claims 1 to 16, in which the silicone oil(s) are chosen from volatile silicone oils such as cyclopolydimethylsiloxanes (INCI name: cyclomethicone), such as cyclopentasiloxane, cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane; linear silicones such as heptamethylhexyltrisiloxane, heptamethyloctyltrisiloxane, hexamethyldisiloxane, octamethyltrisiloxane, decamethyltetrasiloxane or dodecamethylpentasiloxane; and non-volatile silicone oils such as polymethylsiloxanes (PDMS), and phenyl polymethylsiloxanes such as phenyl trimethicones, phenyl dimethicones, phenyltrimethylsiloxydiphenylsiloxanes, diphenyl dimethicones, diphenylmethyldiphenyltrisiloxanes, 2-phenylethyl trimethyl siloxysilicates and polymethylphenylsiloxanes; polysiloxanes modified with fatty acids, fatty alcohols or polyoxyalkylenes, and mixtures thereof.

18. Composition according to any one of Claims 1 to 17, comprising at least one non-volatile silicone oil, preferably a silicone oil chosen from polymethylsiloxanes.

19. Composition according to any one of Claims 1 to 18, in which the silicone oil(s) are present in an amount of between 0.06% and 50% by weight, preferably between 0.6% and 30% by weight, even more preferentially between 1 .8% and 20% by weight and better still between 2.4% and 15% by weight relative to the total weight of the composition.

20. Cosmetic process for treating a keratin material, in which a composition as defined in any one of Claims 1 to 19 is applied to the keratin material.

21. Use of a composition as defined in any one of Claims 1 to 19, in the cosmetics field, and in particular for caring for, protecting and/or making up bodily or facial skin, or for haircare.