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 II Peptide: Tanning, Immunity, and Metabolic Support Revolution Health & Wellness MELANOTAN II PEPTIDE 10MG VIAL UMBRELLA Labs What is Melanotan II the drug that the TGA urges consumers to avoid? Melanotan II Nasal Tanning Spray Risks: Dizziness, Nausea, Skin Cancer Business Insider