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 longer lasting than Melanotan I Nulevel Wellness Medspa Figure 4 from Changes of melanocytic lesions inducedby Melanotan injections and sun bed use ina teenage patient with FAMMM syndrome Semantic Scholar Barbie drug identification: Not a child's play Deville 2024 Journal of Forensic Sciences Wiley Online Library Melanotan II (Tan Jabs): Why They're Not Worth The Risk