No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky What is Melanotan II, the drug that consumers are urged to avoid? 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 Risks Behind Tan Booster Injections & Nasal Sprays Does Mt2 Make Hair Darker Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider