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 What is melanotan and why is it so dangerous? No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Melanotan II Safety: Tanning Injection LIVV Natural Dangerous' tanning products promoted by influencers MELANOTAN II Best MELANOTAN II 2025