Nasal spray tanning: The beauty fad that's having dangerous consequences Melanotan II Wikipedia Here's the part nobody explains when they're selling you the "Barbie drug.", , Melanotan 2 is a synthetic peptide that mimics alpha MSH a hormone your body already makes to tell your skin cells to Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Afamelanotide Wikipedia 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