Don't risk your health for a summer glow! Tanning nasal sprays are creeping onto the UK market, particularly on online and lack of regulation means they are a significant risk to your Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky Tanning, fake tan and Melanotan Cancer Research UK