This guy injected himself with a drug called Melatonan II for 5 months. Here's his before after. : r pics Man warns against 'dangerous' tanning injections after turning so dark he 'looked like Madge from Benidorm' and now has the freckled skin of a 60 year old Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun 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 Melanotan What It Is and Its Relation to Skin Cancer