Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn 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 cells to It doesn't take much to fall down the Barbie Drug rabbit hole. In self tanner subreddits and on TikTok Shop, the tanning injectionaka Melanotan IIis marketed as a self tanner alternative that works by Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News 5 days progress. I've been taking 250mcg of Melanotan II and tanning for 10m outside daily. It's working Tighter in the hamstrings, glutes are still holding all of my fat so Emerging Threat: Melanotan, Repackaging, and Online Sales