Before and after Melanotan tanning therapy, sunless tanning results Brits buy 17 illegal 'Barbie' tanning injections that 'lead to kidney failure, brain swelling and hallucinations' 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 Nitisinone increases melanin in people with albinism National Institutes of Health (NIH)