What is the 'Barbie drug' and should authorities be worried? ABC News MELANOTAN 2 10MG Beverly Hills Rejuvenation Center Dying for a tan? Dermatologist says tanning drug could be lethal 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 Structure of Melanotan I. Download Scientific Diagram Illegal tanning nasal spray not a 'harmless alternative' to sunbaking, says TGA ABC News