| abstract |
The invention relates to the use of a compound of formula (I) or a salt of said compound of formula (I) for tanning skin and/or hair, among other things, X representing O or S and Ht representing a heterocycle (A) or (B) having structures (A) or (B). Heterocycle (A) or (B) contains two to four N atoms in the ring and is unsubstituted, or heterocycle (A) carries one substituent while heterocycle (B) carries one or two substituents, said substituent/s being independently selected among the group comprising C1-C3 alkoxy, C1-C3 alkylsulfanyl, C1-C10 alkenyl, OH, SH, NH2, C1-C10 alkyl excluding t-butyl. |