Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Tanning from the inside out = Highly Dangerous and Illegal!, Many products advertised on social media platforms promising a tan from the inside out or a tan without sun such as injectable No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky melanotan II C50H69N15O9 CID 92432 PubChem