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 Emerging Threat: Melanotan, Repackaging, and Online Sales Customized Tanning Melanotan Nasal Cleanser Sprays 20mm Crimp on Version Melanotan II Peptide: How to get the Perfect Tan Without Beds or Sprays Selank TP 7 Nasal Spray Research Peptide Pure Bio Labs