Melanotan 1 vs. 2: My Summer Journey & Real Results 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 Dangerous' tanning products promoted by influencers Melanotan II (Tan Jabs): Why They're Not Worth The Risk Melanotan II PERMANENTLY Darkened My Skin! Melanotan II (Tan Jabs): Why They're Not Worth The Risk