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 The Hidden Dangers of Tanning Nasal Sprays That You Should Be Aware Of Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider