Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn Melanotan II: Tanning injections, nasal sprays harmful to health Australians who use tanning products containing 'melanotan' are at risk of serious health problems. These products include nasal sprays and other injectable and ingestible tanning products, and are being illegally promoted and Melanotan 2 (MT2) Pinnacle Research Labs No, you don't need the 'Barbie drug' to tan, whatever TikTok says. Here's why melanotan II is so risky