Here's the part nobody explains when they're selling you the "Barbie drug." Melanotan 2 is a synthetic peptide that mimics alpha MSH a hormone your body already makes to tell your skin Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News Melanotan is trending again. As a dermatologist, I strongly need to tell you , Its an unapproved injectable peptide, and were seeing:, nausea and flushing, darkening of existing moles, TikTokers using genetic disorder drug for the side effects of tanning, weight loss Urgent warning over illegal 'Barbie drug' TikTok trend 7NEWS melanotan2 #barbiedrug #skinscience Dustin Portela