COSMETIC OR DERMATOLOGICAL COMPOSITIONS CONTAINING AT LEAST ONE SUBSTANCE FOR INCREASING THE FUNCTIONALITY AND/OR EXPRESSION OF CD44 MEMBRANE RECEPTORS OF SKIN CELLS

摘要

The invention relates to the uses in cosmetics or pharmaceuticals of at least one active agent for increasing the expression and/or functionality of CD44 membrane receptors of skin cells, enabling the fixation of hyaluronic acid and/or colagen, especially collage I and/or collagen IV and/or fibronectin on the surface of said skin cells. Preferably, said active agents are alpha hydroxyl acids or alpha ceto acids or salts and esters of said acids or manganese chloride. The inventive cosmetic or pharmaceutical compositions improve fixation of hyaluronic acid and/or collagen, especially collagen I or collagen IV and/or fibronectin on the surface of skin cells and improve hydration of the dermis and epidermis and prevent or treat skin-ageing phenomena and inflammatory phenomena.