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 Risks of Melanotan: TGA to issue fresh warning against 'Barbie drug' The Australian Experts warn that using Melanotan II, a nasal spray tan, is not as harmless as it first appears, urging Aussies striving to be beautifully bronzed to stick to fake tan., , #spraytan #melanotan IMB issues warning over tanning injections at salons or bought on internet The Irish Times Dangerous' tanning products promoted by influencers