Abstract: The present invention relates to compounds having general formula (I): CH3—(CH?CH)n—R??(I) where: n=3, 5, 7; R is chosen from —CH2—O—CO—R?, —CO—OR? or —CO—O(?), R? is chosen from H, C1-C22 alkyl or alkenyl, aryl or aralkyl, or sugars; and their pharmaceutically acceptable salts, such as sodium, potassium and lysine salts, for use as the active ingredient in pharmaceutical or cosmetic compositions for improving the pigmentation of the human skin, treating pigmentation disorders and/or improve both the photoprotective capacity of the skin and the intensity of its suntan.

Abstract: The present invention relates to compounds having general formula (I): CH3—(CH?CH)n—R??(I) where: n=3, 5, 7; R is chosen from —CH2—O—CO—R?, —CO—OR? or —CO—O(?), R? is chosen from H, C1-C22 alkyl or alkenyl, aryl or aralkyl, or sugars; and their pharmaceutically acceptable salts, such as sodium, potassium and lysine salts, for use as the active ingredient in pharmaceutical or cosmetic compositions for improving the pigmentation of the human skin, treating pigmentation disorders and/or improve both the photoprotective capacity of the skin and the intensity of its suntan.

Abstract: The invention relates to the use of spermidine or a pharmaceutically acceptable derivative thereof as the active principle in a pharmaceutical, cosmetic or dietetic composition. The composition is used for promoting pigmentation of the hair, particularly the shaft of the hair. The invention also relates to the composition which promotes this pigmentation effect, the composition containing spermidine or a derivative thereof (such as a salt) as an active principle and is intended for topical or oral administration.