Melanotan II: Benefits, Usage, and Safety Tips Melanotan II is a synthetic peptide studied for its role in melanin production and skin pigmentation It works by mimicking alpha MSH which is the hormone involved in regulating skin color Primary Melanotan 2 Cyclic Heptapeptide for Melanocortin Research Afamelanotide tested as a new treatment for vitiligo Vitiligo Clinic Here's the part nobody explains when they're selling you the "Barbie drug.", Melanotan 2 is a synthetic peptide that mimics alpha MSH a hormone your body already makes to tell your skin cells to