Melanotan II (Tan Jabs): Why They're Not Worth The Risk Melanotan What It Is and Its Relation to Skin Cancer How Long Does It Take For Melanotan To Work? Melanotan II Safety: Tanning Injection LIVV Natural 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 What is Melanotan II the drug that the TGA urges consumers to avoid?