Health warning over banned tanning drug The Canberra Times Canberra, ACT 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 Alfamelanotide (melanotan) is not safe for recreational use, regulated, or predictable., As a dermatologist, this is why it concerns me:, Its an unapproved substance with no quality control, Melanotan 2 Nasal Spray Research Grade Peptide Australia Melanotan What It Is and Its Relation to Skin Cancer