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 Cancer Association of South Africa (CANSA) Fact Sheet and Position Statement on Sunless Tanning Melanotan II in Santa Barbara, CA Eternity Health Partners Your body already makes a hormone that tells your skin to tan. Melanotan 2 is a synthetic peptide engineered to mimic that hormone but in a version that's more potent and longer lasting than Melanotan II reverses memory impairment induced by a short term HF diet ScienceDirect