You Should Avoid Using Nasal Tanning Sprays Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically View of Association of tanning injection with hypercortisolism, hyperglycaemia and ketosis in type 1 diabetes mellitus British Journal of Diabetes Melanotan 2 is an unregulated, unsafe substance often advertised as a self tanning aid., Use of Melanotan 2 has been linked to serious side effects including loss of vision, moles, stroke, muscle 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 Love Island generation' skin cancer fear BBC News