Does the MOTC (Melanotan II) peptide injection accumulate or stop being effective once stopped? Melanotan is not a tan. It's an unregulated peptide with real risk. As a dermatologist, here's the reality: It has been linked to new and changing moles including cases of Melanotan II Safety: Tanning Injection LIVV Natural Tanning from the inside out = Highly Dangerous and Illegal! Many products advertised on social media platforms promising a tan from the inside out or a tan without sun such