Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Melanotan II (Tan Jabs): Why They're Not Worth The Risk Melanotan II (Tan Jabs): Why They're Not Worth The Risk Dangerous 'Barbie drug' Melanotan II sparks crackdown on social media influencers ABC News 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