Health expert says Melanotan II darkens skin moles and can make melanoma hard to detect Herald Sun No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Experts warn that using Melanotan II, a nasal spray tan, is not as harmless as it first appears, urging Aussies striving to be beautifully bronzed to stick to fake tan., , #spraytan #melanotan Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Afamelanotide Wikipedia