Tanning Nasal Spray: Should You Skip It? What is Melanotan II the drug that the TGA urges consumers to avoid? How long does Melanotan Nasal Spray Take to Work? You Should Avoid Using Nasal Tanning Sprays Illegal tanning nasal sprays being pushed by social media influencers 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