Capsaicin is a chemical compound found in chili peppers. It is commonly applied to the skin for pain relief. You can find oral rinses that have capsaicin as an ingredient. Ibuprofen is a ...

Hot peppers trick your brain into thinking your mouth is on fire. But there's no real heat in a pepper. So, what's going on? It's all about a chemical compound in peppers called capsaicin.