Melanotan II Synthetic Tanning Drug Molecule #3 Art Print by Molekuul Science Photo Library Fine Art America 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 Stop Taking Melanotan II Dermatologist Breaks It Down 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