Melanotan is not a tan. It's an unregulated peptide with real risk. As a dermatologist, here's the reality: It has been linked to new and changing moles including cases of Eruptive naevi and darkening of preexisting naevi 24 h after a single mono dose injection of melanotan II Semantic Scholar Change in moles linked to use of unlicensed sun tan jab The BMJ Risks of Melanotan: TGA to issue fresh warning against 'Barbie drug' The Australian