COSMETIC COMPOSITION COMPRISING A GEMINI SURFACTANT AND HIGH LEVELS OF SOLID FATTY SURFACTANTS

摘要

A subject of the present invention is a cosmetic composition of oil-in-water emulsion type comprising: (1) at least one gemini surfactant of formula (I):;;in which R1 and R3 denote, independently of one another, an alkyl radical having from 1 to 25 carbon atoms; R2 denotes a spacing group consisting of a linear or branched alkylene chain having from 1 to 12 carbon atoms; X and Y denote, independently of one another, a —(C2H4O)a—(C3H6O)bZ group; n ranges from 1 to 10; and -n ranges from 1 to 10; and (2) at least 20% by weight of the total weight of the composition of a fatty phase comprising at least one oil and at least one fatty substance chosen from solid fatty substances and pasty fatty substances; the level of fatty substances chosen from solid fatty substances and pasty fatty substances representing between ⅓ and ⅔ by weight of the fatty phase. The composition in accordance with the invention has a very significant consistency, ranging from balm to butter, or even to solid emulsions (sticks), original and pleasant sensory properties, such as a melting away effect, easy application, a non-greasy and non-shiny finish, and also good stability.

主权项

1. Cosmetic composition of oil-in-water emulsion type comprising:
(1) at least one gemini surfactant of formula (I): in which:
R1 and R3 denote, independently of one another, an alkyl radical having from 1 to 25 carbon atoms;R2 denotes a spacing group consisting of a linear or branched alkylene chain having from 1 to 12 carbon atoms;X and Y denote, independently of one another, a —(C2H4O)a—(C3H6O)bZ group, where:
Z denotes a hydrogen atom or a —CH2—COOM, —SO3M, —P(O)(OM)2, —C2H4—SO3M, —C3H6—SO3M or —CH2(CHOH)4CH2OH radical, where M represent H or an alkali metal or alkaline earth metal or ammonium or alkanolammonium ion,a ranges from 0 to 15,b ranges from 0 to 10, andthe sum of a+b ranges from 1 to 25; andn ranges from 1 to 10; and (2) at least 20% by weight of the total weight of the composition of a fatty phase comprising at least one oil and at least one fatty substance chosen from solid fatty substances and pasty fatty substances;the level of fatty substances chosen from solid fatty substances and pasty fatty substances representing between ⅓ and ⅔ by weight of the fatty phase.