Emerging Threat: Melanotan, Repackaging, and Online Sales 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 Avoid nasal tanning sprays or nasal tanners entirely. These products can produce nasty side effects, such as nausea and vomiting, high blood pressure, respiratory issues, and even links to skin cancer. Nasal