Yes, but with restrictions. Teeth whitening products are efficient in removing various stains and discolorations, however their efficiency varies depending on the person. Furthermore, these kits may not be effective at whitening badly discolored teeth, so in-office whitening treatment with your dentist is the best option. The most common type of teeth bleaching products contain hydrogen peroxide. This chemical can remove stains and discolorations from your tooth enamel if it is applied regularly. However, like any other product, it has its limitations. For example, you should avoid eating foods that are dark in color or have ingredients such as tannins or caffeine because they will just make the staining or yellowing worse. These types of substances are found in many fruits and vegetables. In addition, if you have severe tooth sensitivity after using a teeth bleaching product, then you should stop using it immediately. Sensitivity is when your nerves inside your teeth are irritated by something mechanical, such as chewing or brushing. If you keep exposing them to more stress than what they can take, then you may develop long-term damage or loss of those nerves. Finally, make sure that you use a non-irritating mouthwash after you have used a teeth bleaching product. This is important since some components in these products can cause irritation if you don't wash your mouth out properly.