Melanotan: A tanning peptide that stimulates melanin production. Used for UV protection and even skin tone, it may offer benefits like reduced sun damage risk and appetite suppression, helping patients achieve a Melanotan II improved sociability index scores but did not affect Download Scientific Diagram 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 2 Saint Peters, MO Modern Functional Health Medical Spa