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 Melanotan II: Tanning injections, nasal sprays harmful to health Melanotan is trending again. As a dermatologist, I strongly need to tell you , Its an unapproved injectable peptide, and were seeing:, nausea and flushing, darkening of existing moles, Identification and characterization by LCUVMS MS of melanotan II skintanning products sold illegally on the Internet Breindahl 2015 Drug Testing and Analysis Wiley Online Library Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun