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 Love Island generation' skin cancer fear Melanotan What It Is and Its Relation to Skin Cancer Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun The Deadly Tan Jab Injection LMA Clinic Melanotan injections are sold illegally and possibly unsafe Cancer Research UK Cancer News