Sharing my personal experience with Melanotan tanning injections (now nasals) how vanity led me down the path of using it, thinking I'd done all my research. Now, years later, I'm dealing with View of Association of tanning injection with hypercortisolism, hyperglycaemia and ketosis in type 1 diabetes mellitus British Journal of Diabetes 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 You Should Avoid Using Nasal Tanning Sprays