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 1 vs Melanotan 2 : Key Differences Melanotan II Vici Peptides What Is Melanotan II (MT2)? Mechanism, Stability, and Research Overview Tanning from the inside out = Highly Dangerous and Illegal! Many products advertised on social media platforms promising a tan from the inside out or a tan without sun such Melanotan 2 Myths Debunked: What's Fact and What's Fiction?