COSMETIC OR DERMATOLOGICAL ACTIVE INGREDIENT COMPRISING A MIXTURE OF UNSATURATED FATTY DICARBOXYLIC ACIDS, COMPOSITIONS COMPRISING THE SAME, AND COSMETIC OR DERMATOLOGICAL USES
The ingredient comprises a mixture of unsaturated dicarboxylic acids comprising the Z and E isomers of at least one mono-unsaturated dicarboxylic C12-C24 acid, the concentration of the E isomer being of at least 25% by weight based on the total weight of Z and E isomers. The ingredient can be used to form cosmetic or dermatological compositions, in particular for lightening the skin, improving the clarity and unification of the skin complexion.