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 Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically Melanotan II reverses memory impairment induced by a short term HF diet ScienceDirect The Tanning Drug What Patients Should Know What is Melanotan II the drug that the TGA urges consumers to avoid?