Patent ID: 8546335

Claim:
A method for treating the signs of skin aging and photo-aging or treating against photo-aging, the method comprising: providing a proteasome activating peptidic hydrolyzate from corn, pea, yeast or rice comprising bioactive peptides, with a molecular weight of less than 6 kDa, comprising from 3 to 5 amino acids, each bioactive peptide comprising at least one aspartic acid, one cysteine residue, and an arginine residue, wherein the bioactive peptide is selected from the group consisting of: (SEQ ID No. 1) Arg-Asp-Cys-Arg-Arg, (SEQ ID No. 2) Asn-Asp-Cys-Arg-Lys, (SEQ ID No. 3) Asp-Cys-Arg-His, (SEQ ID No. 4) Val-Asp-Cys-Arg, and (SEQ ID No. 5) Asp-Cys-Arg; topically applying an effective quantity of said peptidic hydrolyzate to the skin, the nails or the hair to be treated.