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 Melanotan II: Tanning injections, nasal sprays harmful to health Figure 5 from Changes of melanocytic lesions inducedby Melanotan injections and sun bed use ina teenage patient with FAMMM syndrome Semantic Scholar Melanotan II Synthetic Tanning Drug Molecule #3 Canvas Print R3TA (GLP 3) 10mg Melanotan AUS