Peptides are having a moment, but not all of them are harmless., One thats getting a lot of attention right now? Melanotan II., Its being used to achieve a tan from the inside, but what it 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 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. Insights into Tanning Biology and Tanning Products JCAD The Journal of Clinical and Aesthetic Dermatology Eruptive Dysplastic Nevi Following Melanotan Use Actas Dermo Sifiliogrficas