FDA Fast Facts Illegal tanning nasal spray not a 'harmless alternative' to sunbaking, says TGA ABC News 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 Insights into Tanning Biology and Tanning Products JCAD The Journal of Clinical and Aesthetic Dermatology Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Emerging Threat: Melanotan, Repackaging, and Online Sales