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 Shop Melanotan Products in Australia Fast & Discreet Peptide Clinics taken to court by TGA over false advertising claims about bodybuilder drug ABC News 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