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 Melanotan II (Tan Jabs): Why They're Not Worth The Risk Melanotan Nasal Spray Side Effects and Dangers Nasal tanning sprays and oral tanning drops are often marketed as quick fixes for glowing skin but these products are unregulated in the UK, with unknown ingredients, dosing, and formulation. They have The Tanning Drug What Patients Should Know