Melanotan II (Tan Jabs): Why They're Not Worth The Risk The Risks of Fast Tanning 'Barbie Drug' Explained Ever Clinic 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 Don't risk using tanning products containing melanotan Therapeutic Goods Administration (TGA)