Teeth whitening has become one of the most popular cosmetic dental treatments, thanks to the wide availability of at-home whitening strips, gels, trays, and LED kits. While these products can brighten your smile effectively, using them too often can do more harm than good. Many people assume that if a little whitening is good, more must be better—but overusing these products can lead to serious oral health issues. Here’s why it’s important to follow guidelines and use whitening products responsibly.