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 Avoid those tanning injections! Amy Jayne Aesthetics Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Self Tanning Drops TAN LUXE Reminder of serious health risks with 'Melanotan 2' self tan products Irish Pharmacist