Melanotan 1: mechanisms of action, clinical applications and safety_Chemicalbook No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Melanotan I (MT 1) 10mg 24Peptides 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