Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Fake tanning Melanoma Fund UK 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 Burn notice: Gen Z and the terrifying rise of extreme tanning Health & wellbeing The Guardian Is Melanotan the New Solarium for a Perfect Tan?