Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Melanotan What It Is and Its Relation to Skin Cancer Warning issued over increased use of 'Barbie drug' 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 Structure of Melanotan I. Download Scientific Diagram