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 No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Here's the part nobody explains when they're selling you the "Barbie drug." Melanotan 2 is a synthetic peptide that mimics alpha MSH a hormone your body already makes to tell your skin Skin cancer GPs urge Barbie drug users to get checks The Risks of Fast Tanning 'Barbie Drug' Explained Ever Clinic Warning issued over increased use of 'Barbie drug'