| abstract |
The invention is directed to the cosmetic use of tetrapeptides according to formula (I) R 1 - Val-Leu-Leu-Lys - R 2 (I) wherein R 1 is linked to the NH2 -terminal group of the peptide and is chosen from the group consisting of -H, a linear saturated or unsaturated or branched saturated or unsaturated acyl group having 1 to 24 carbon atoms, which may be functionalized by a -OH, -SH, - COOH or -CONH 2 group wherein R 2 is the terminal carboxylic group of the peptide either as -COOR 3 or -CO- NH 2 , and wherein R 3 is chosen from the group consisting of -H, a linear saturated or unsaturated or branched saturated or unsaturated alkyl group having 1 to 24 carbon atoms, which may be functionalized by a -OH, -SH, - COOH or -CONH 2 group. The invention is also directed to the respective tetrapeptides and cosmetic compositions containing these. |