Apply the gel side of the strip to the teeth. The strip will instantly mold and adhere to teeth. Align the strips with the gum line and press gently for good contact and fold the remainder of the strip behind your teeth.
After applying the crest 3D Whitestrips, turn on the Blue Light and position it against the top strip. The device automatically turns off when the session is done. Repeat this process for the bottom strip . The LED light safely penetrates the enamel surface to weaken tough, yellow stains so that the Crest 3D Whitestrips can work more efficiently revealing a brighter smile.