What is Melanotan II the drug that the TGA urges consumers to avoid? 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 Melanotan What It Is and Its Relation to Skin Cancer PDF) Effects of a Superpotent Melanotropic Peptide in Combination With Solar UV Radiation on Tanning of the Skin in Human Volunteers Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider