This invention relates to the cosmetic use of at least one compound of formula (I)whereinA1 is the radical corresponding to D- or L-SerA2 is the radical corresponding to D- or L-Asp or Glu,A3 is the radical corresponding to D- or L-Lys, Arg or Orn,A4 is the radical corresponding to D- or L-pro,R1, R2 and R3 are as defined in the claims as anti-aging and restructuring agents.