The Tanning Drug What Patients Should Know Stop Taking Melanotan II Dermatologist Breaks It Down How Melanotan Peptides Work to Enhance Skin Tone and Promote Tanning Age Well ATL PDF) Use of melanotan I and II in the general population 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