Uses Undecylenoyl phenylalanine (MoreWhiteUP) is a white powder. It is a structural analog of α-MSH, which can inhibit the activity of melanocytes and reduce the production of melanin by competitively binding to the melanin receptor MC1-R on melanocytes, so that melanocytes cannot produce tyrosinase. According to some clinical trials, Undecylenoyl Phenylalanine (MoreWhiteUChemicalbookP) does reduce pigmentation spots. Undecylenoyl phenylalanine has good skin affinity and can control the combination of α-MSH (melanocyte stimulating hormone) and melanin production factor, thereby blocking the process of melanin formation. It can block α-MSH at 0.001% concentration, and the optimal concentration is 1%. Comprehensively inhibits melanin production from multiple links, and the effect is more obvious and lasting.