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 II Synthetic Tanning Drug Molecule #1 Wood Print by Molekuul Science Photo Library Science Photo Gallery No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky MELANOTAN II PEPTIDE 10MG VIAL UMBRELLA Labs