Melanotan II (MT II) Peptide Therapy Beverly Hills Don't risk using tanning products containing melanotan Therapeutic Goods Administration (TGA) You Should Avoid Using Nasal Tanning Sprays How Long Does It Take For Melanotan To Work? 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 How long does Melanotan Nasal Spray Take to Work?