Melanotan 1 Reviews, Clinical Trials, and Safety 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 1 (10 MG) Sigma Compounds Melanotan II Safety: Tanning Injection LIVV Natural 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 The Tanning Drug What Patients Should Know