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 You Should Avoid Using Nasal Tanning Sprays Risks of Melanotan: TGA to issue fresh warning against 'Barbie drug' The Australian 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 Experts lash use of popular social media sun tanning drug Melanotan