Illegal tanning nasal spray not a 'harmless alternative' to sunbaking, says TGA ABC News TikTokers using genetic disorder drug for the side effects of tanning, weight loss Changes in Oral Mucosa Associated with Melanotan II Injections: A Case Report 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?