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 What is Melanotan II the drug that the TGA urges consumers to avoid? Afamelanotide Wikipedia Melanotan (MT) II Melanocortin Receptor TargetMol IMB issues warning over tanning injections at salons or bought on internet The Irish Times