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 Melanotan II injection resulting in systemic toxicity and rhabdomyolysis Melanotan 1 MC1R Selective Peptide for Melanocortin Research Melanotan II 99%+ Pure Peptide Amino Club Amino Club Betatan Melanotan ii Tanning Injection 10 mg vial Betatan Tan me skinny