Dermapep® W411 (Methyl Undecenoyl Leucinate (and) Butylene Glycol (and) Palmitoyl Hexapeptide-36) is a cutting-edge cosmetic ingredient designed to enhance skin brightness and safety. This innovative formulation works synergistically to inhibit melanogenesis in human skin, showcasing its potency in reducing UV-induced expression and production of tyrosinase, a key enzyme in melanin synthesis. In vitro studies have demonstrated that the actives effectively curb tyrosinase activity and melanin production, leading to visibly brighter skin. Supported by in vivo clinical studies, Dermapep® W411 emerges as a powerful agent in skincare, offering an effective solution for those seeking a luminous and even complexion while safeguarding their skin from environmental aggressors.