Oligopeptide-34 is a synthetic peptide that reduces melanin synthesis and blocks the transfer of melanosomes by inhibiting the activity of TRP-1, TRP-2, MITF and tyrosinase, thus having a whitening effect. In addition, it promotes the breakdown of melanocyte stimulating hormone (MSH), further reducing tyrosinase activity and reducing pigmentation. As a cosmetic ingredient, Oligopeptide-34 helps improve skin tone, promote collagen production, and slow down the aging process of the skin.