Don't risk your health for a summer glow! Tanning nasal sprays are creeping onto the UK market, particularly on online and lack of regulation means they are a significant risk to your Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun 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 Nasal tanning sprays warning issued by Trading Standards Melanotan 2 Nasal Spray Research Grade Peptide Australia