Teeth whitening is one of the most popular cosmetic dental treatments, giving you a brighter, more confident smile in as little as one visit. However, one common side effect people experience after whitening is tooth sensitivity. This can feel like a sharp, temporary discomfort when eating or drinking hot, cold, or sweet foods. The good news is that sensitivity is usually short-lived and there are simple ways to minimize or avoid it. Here are some helpful tips to keep your smile bright and comfortable after whitening.