Nasal Tanners Say "NO WAY" to the spray! UNAPPROVED, UNREGULATED, UNSAFE. Nasal tanning sprays, or nasal tanners, promise an all over tan without sun exposure. However, they are unregulated, can be 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 It Take For Melanotan To Work? 50 Weeks on Melanotan2. Used to be Type 1 and never able to tan. Have never felt better! Beard color change is epic : r Melanotan2