Tanning Holos Medical Spa Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun The Dangers of Melanot*n II Explained 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 Nearly a quarter of people in Northern Ireland are regularly using sunbeds Melanoma Focus