No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky MC1R Peptide Agonist Self Assembles into a Hydrogel That Promotes Skin Pigmentation for Treating Vitiligo ACS Nano Frontiers Melanocortin therapies to resolve fibroblast mediated diseases Skin Cancer Prevention Springer Nature Link Identification and characterization by LCUVMS MS of melanotan II skin tanning products sold illegally on the Internet Breindahl 2015 Drug Testing and Analysis Wiley Online Library