Avoid nasal tanning sprays or nasal tanners entirely. These products promise an all over tan without sun exposure but they are unregulated, can be unsafe, and contain potentially risky substances like Melanotan 2. Melanotan injections are sold illegally and possibly unsafe Cancer Research UK Cancer News Melanotan II Wikipedia 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 Eruptive Dysplastic Nevi Following Melanotan Use Actas Dermo Sifiliogrficas Afamelanotide Wikipedia