Peptides are having a moment, but not all of them are harmless. One that's getting a lot of attention right now? Melanotan II. It's being used to achieve a tan from the No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky 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 Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Love Island generation' skin cancer fear BBC News