Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News 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 What is melanotan and why is it so dangerous? The Deadly Tan Jab Injection LMA Clinic Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky