Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Melanotan What It Is and Its Relation to Skin Cancer Tanning peptides like melanotan are trending online, but theyre not approved, not regulated, and illegal to advertise in Australia. When products havent been properly tested, theres no way to know 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 Reminder of serious health risks with 'Melanotan 2' self tan products Irish Pharmacist I accidentally undid years of skin work and didnt realize it until it was too late., At the beginning of November, I started taking melanotan 2 and honestly?, I loved it., My tan deepened