Peptides are having a moment, but not all of them are harmless., One thats getting a lot of attention right now? Melanotan II., Its being used to achieve a tan from the inside, but what it Superpower Expert warning over danger of nasal tanning and other alternative methods Wales Online Woman with tanning 'obsession' claims people accuse her of trying to 'switch races' FOX 5 Atlanta 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