TikTokers using genetic disorder drug for the side effects of tanning, weight loss Don't risk using tanning products containing melanotan Therapeutic Goods Administration (TGA) You Should Avoid Using Nasal Tanning Sprays Melanotan 2 Nasal Spray Polar Peptides 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