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 Pyoderma Gangrenosum Secondary to Melanotan Cureus Dermatologists from @HealthySkin4All say using melanotan 2 is "dangerous" and the only safe tanning method is using fake tan. They're now on the alert for patients presenting with warning signs "an unusually Melanotan Before After Skin