| abstract |
The invention relates to cosmetic agents containing a compound of formula: R ** 7 - C (R ** 2) = C (R ** 3) -C (R ** 4) = C (R ** 5) - R ** 7 in which R ** 1 represents a dimethoxy-methyl group, -CH (OR ** 6) 2, 1,3-dioxolan-2-yl, 4-methyl-1,3-dioxolan-2-yl or 1,3-dioxan-2-yl, R ** 2, R ** 3, R ** 4 and R ** 5 represent a hydrogen atom, a methyl group or an ethyl group, R ** 6 represents a C3-8 alkyl group, and R ** 7 represents a diethoxymethyl group or R ** 1. The cosmetic agents of the invention are used for coloring human skin and dyeing the hair. |