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 Burn notice: Gen Z and the terrifying rise of extreme tanning Health & wellbeing The Guardian Thinking about that tanning nasal spray? Don't. Unregulated nasal tanning sprays are being sold online, claiming to give you a sun kissed glow. But they're risky and illegal. According to the Chartered Trading Melanotan Nasal Tanners Before and After Turbo Tan Star Eruptive Dysplastic Nevi Following Melanotan Use Actas Dermo Sifiliogrficas You Should Avoid Using Nasal Tanning Sprays