Melanotan II: Tanning injections, nasal sprays harmful to health 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 PDF] Melanotan Induced Hyperpigmentation of Oral Soft Tissues Semantic Scholar MT 2 (Melanotan II) Polar Peptides Melanotan 1 vs Melanotan 2: Tanning Peptides Compared Which Is Better? PPW Peptide Protocol Wiki