Warning issued over increased use of 'Barbie drug' Melanotan 2 Reviews, Clinical Trials, and Safety What Caused These Multiple Hyperpigmented Macules of the Mouth? 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 Eruptive Dysplastic Nevi Following Melanotan Use Actas Dermo Sifiliogrficas COM March 2009 Diagnosis UW School of Dentistry