Crest 3D White 1 Hour Express Whitestrips provide fast-acting teeth whitening for a bright smile in just one hour. These whitening strips are formulated with key active ingredients like hydrogen peroxide, which effectively removes stains and discoloration from the teeth. The mechanism of action involves the hydrogen peroxide penetrating the enamel to break down stains and reveal a whiter smile. The texture of the strips is comfortable and easy to apply, adhering securely to the teeth for the duration of the treatment. Users can expect a visibly whiter smile with just one hour of use, making it a convenient and effective teeth whitening solution.