Cosmetic or dermatological use of vitamin a or the esters...

A - Human Necessities – 61 – K

Patent

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Details

A61K 8/67 (2006.01) A61K 8/73 (2006.01) A61K 31/07 (2006.01) A61Q 19/00 (2006.01) A61Q 19/08 (2006.01)

Patent

CA 2474717

The invention relates to the use of dimethylated .beta.-cyclodextrins, particularly DIMEB and RAMEB, as agents promoting the penetration of vitamin A or the cosmetically or dermatologically acceptable esters thereof into the epidermis and the retention thereof in the skin, for preparing a cosmetic or dermatological composition containing a combination of vitamin A or at least one of the cosmetically or dermatologically acceptable esters thereof and said dimethylated .beta.-cyclodextrins. The invention also relates to new cosmetic or dermatological compositions containing said combinations of dimethylated .beta.-cyclodextrins and vitamin A or vitamin A esters, particularly in the form of inclusion complexes. Also disclosed are uses of said compositions in cosmetics or dermatology.

L'invention concerne l'utilisation des .beta.-cyclodextrines diméthylées, en particulier du DIMEB et du RAMEB, en tant qu'en agents favorisant la pénétration dans l'épiderme et la rétention dans la peau de la vitamine A ou de ses esters cosmétiquement ou dermatologiquement acceptables, pour la préparation d'une composition cosmétique ou dermatologique renfermant une association de vitamine A ou d'au moins un de ses esters cosmétiquement ou dermatologiquement acceptables avec lesdites .beta.-cyclodextrines diméthylées. Elle concerne également de nouvelles compositions cosmétiques ou dermatologiques renfermant ces associations de .beta. -cyclodextrines diméthylées et de vitamine A ou d'esters de vitamine A, en particulier sous forme de complexes d'inclusion. Elle concerne également des utilisations de ces compositions dans le domaine cosmétique ou dermatologique.

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