Melanotan II (Tan Jabs): Why They're Not Worth The Risk Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun Get a tan that lasts with melanotan tanning injections! Melanotan stimulates melanin production in the skin, the pigment responsible for giving us that coveted bronzed look. With regular injections, you can achieve Melanotan II synthetic tanning drug molecule, illustration Stock Image F029 9531 Science Photo Library IMB issues warning over tanning injections at salons or bought on internet The Irish Times