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 Melanotan 2 (MT 2) is a synthetic peptide commonly studied for its role in melanin production and pigmentation processes. Researchers use it to explore skin response and peptide activity in controlled lab environments. Melanotan 2 LeadWest Medical Melanotan II 10mg (MT 2) Peptide: Purity Research Melanotan 2 Cyclic Heptapeptide for Melanocortin Research