Tan with Bronze Up Nasal Spray for Flawless Results What is Melanotan II the drug that the TGA urges consumers to avoid? Avoid nasal tanning sprays or nasal tanners entirely. These products promise an all over tan without sun exposure but they are unregulated, can be unsafe, and contain potentially risky substances like Melanotan 2. Viral 'Barbie drug' for tanning can cause brain swelling and even cancer, experts warn