What’s the most effective at-home teeth whitening product? Shop Crest Whitestrips, Sensodyne toothpaste, whitening pens and ...

acts as a bleaching agent, and diminishes gum inflammation. "Some people's teeth are dark because they have internal stains on the tooth, not on the surface," says Marc Lowenberg ...

The best whitening products for sensitive teeth reduce active ingredients to minimize discomfort. Here are the winning picks ...