Nasal tanning spray warning We've become aware of widespread availability of nasal sprays containing Melanotan II, mostly on line, but also through gyms and salons. The sprays are promoted as a safe way MT2 Saline and Melanotan Nasal Spray Melanotan Aus 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 You Should Avoid Using Nasal Tanning Sprays