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. Your Guide to Melanotan II: What to Know Before Beginning Your Peptide Therapy Melanotan 2 10MG Raw Amino Melanotan 2 Cyclic Heptapeptide for Melanocortin Research 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 longer lasting than