Emerging Threat: Melanotan, Repackaging, and Online Sales Changes in Oral Mucosa Associated with Melanotan II Injections: A Case Report 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 Eruptive Dysplastic Nevi Following Melanotan Use Actas Dermo Sifiliogrficas Melanotan & Tanning Injections: Safe or Risky?