Liquid cristal cosmetic composition

A - Human Necessities – 61 – K

Patent

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A61K 9/127 (2006.01) A61K 8/02 (2006.01)

Patent

CA 2232746

A process for reversibly applying a cosmetic composition to the skin or hair comprises: a) contacting the skin or hair with the cosmetic composition, the composition comprising at least one amphiphilic material which is capable of forming a water-insoluble liquid crystal phase of greater than one-dimensional periodicity and a cosmetic agent; and b) when desired, removing the cosmetic composition by applying to the skin or hair a cleansing composition comprising a surface active agent and a hydrotrope capable of destroying the liquid crystal phase formed in step a). An advantage of such a system is that the cosmetic agent is strongly adhered to the skin or hair when applied and can be effectively removed therefrom when desired.

L'invention porte sur un procédé d'application et d'élimination d'un produit cosmétique sur la peau ou les cheveux consistant à: a) enduire la peau ou les cheveux du produit cosmétique qui comporte au moins une substance amphiphile susceptible de former une phase cristalline liquide non hydrosoluble présentant une périodicité unidimensionnelle, ainsi qu'un agent cosmétique; et b) lorsqu'on le désire, éliminer le produit cosmétique en appliquant sur la peau ou les cheveux un nettoyant comportant un tension actif et un hydrophobe susceptible de détruire la phase de cristal liquide formée en a). L'avantage de ce système est la forte adhérence du produit à la peau et aux cheveux après son application et son élimination efficace lorsqu'on le désire.

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