Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and longer lasting than Melanotan 2 Good Effects Bad Effects Staten Island, NY Eye Color Change from Dark to Light Brown with Kerato (Honey Pigment) Melanotan II in Santa Barbara, CA Eternity Health Partners How Melanotan Peptides Work to Enhance Skin Tone and Promote Tanning Age Well ATL