What is Melanotan 2? Honest Peptide 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 Melanotan II Self Tanner Dark Skin Sun Tanning Spray Tanning Nasal Spray Melanotan II and Mt 2 Tanning Spray Nasal price MD breaking down Melanotan II Part 2 of my peptide series. The research, the risks, the reality. Long term safety data? Nonexistent. BJOC The first preparative solution phase synthesis of melanotan II Melanotan II A Sun Kissed Look, and a Confident You.