MT 2 (Melanotan II) Polar Peptides MELANOTAN II 10 mg Peptide Cart 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 Is Melanotan the New Solarium for a Perfect Tan? Melanotan II stimulates melanin production giving you a tan without UV exposure. The appeal: Tanning without sunburn risk Appetite suppression (side effect) Increased libido (side effect) Works