Insights into Tanning Biology and Tanning Products JCAD The Journal of Clinical and Aesthetic Dermatology Melanotan Tanning Peptides: Safe Use, Side Effects & How It Works Scientifically 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 Injection What does it do? What is Melanotan II the drug that the TGA urges consumers to avoid?