Patent ID: 7579315

Claim:
A medical or cosmetic method for alleviating or preventing an effect of aging in skin, said method comprising administering to a subject of an effective amount of a peptide wherein the peptide comprises an amino acid sequence present in an α-S2 casein precursor, said sequence comprising the last3 amino acids of the C-terminal end of the α-S2 casein precursor, and not comprising at its N-terminus the N-terminal amino acid of the full α-S2 casein precursor, and wherein the peptide comprises an amino acid sequence selected from the following sequence: (SEQ ID NO: 2) Lys Val Ile Pro Tyr Val Arg Tyr Leu; (SEQ ID NO: 3) Thr Lys Val Ile Pro Tyr Val Arg Tyr Leu; (SEQ ID NO: 4) Lys Thr Lys Val Ile Pro Tyr Val Arg Tyr Leu; (SEQ ID NO: 5) Pro Lys Thr Lys Val Ile Pro Tyr Val Arg Tyr Leu; (SEQ ID NO: 6) Gln Pro Lys Thr Lys Val Ile Pro Tyr Val Arg Tyr Leu; (SEQ ID NO: 7) Ala Met Lys Pro Trp Ile Gln Pro Lys Thr Lys Val Ile Pro Tyr Val Arg Tyr Leu; and (SEQ ID NO: 8) Pro Gln Tyr Leu Lys Thr Val Tyr Gln His Gln Lys Ala Met Lys Pro Trp Ile Gln Pro Lys Thr Lys Val Ile Pro Tyr Val Arg Tyr Leu.