Melanotan II LKT Labs Melanotan vs. Astaxanthin for Glowing Skin No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky 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 The Tanning Drug What Patients Should Know