Melanotan is trending again. As a dermatologist, I strongly need to tell you It's an unapproved injectable peptide, and we're seeing: nausea and flushing darkening of existing moles Melanotan What It Is and Its Relation to Skin Cancer Is Your Mole a Cause for Concern? Skin Lesions That May Become Melanoma AIM at Melanoma Foundation Does a Discolored Mole Always Mean Melanoma?: Manhattan Dermatology: General, Surgical, & Cosmetic Dermatology