Melanotan II (Tan Jabs): Why They're Not Worth The Risk Most people using MT2 think they're just getting a faster tan. What they don't know is that this peptide hits multiple melanocortin receptors in the body and the side effects go far beyond nausea and 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 What is Melanotan 2? Honest Peptide Illegal tanning nasal sprays being pushed by social media influencers Risks of Melanotan: TGA to issue fresh warning against 'Barbie drug' The Australian