Melanotan & Tanning Injections: Safe or Risky? 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 Australians who use tanning products containing 'melanotan' are at risk of serious health problems. These products include nasal sprays and other injectable and ingestible tanning products, and are being illegally promoted and Melanotan II Safety: Tanning Injection LIVV Natural