Apply Whitestrips to upper and lower teeth once daily for 60 minutes total. Then apply light to upper and lower teeth until it turns off automatically. Full results in 10 days.

Precautions: Do not use this light device if you have oral cancer, are being treated with photodynamic therapy by your doctor, are taking light sensitive medicines like aminolevulinic acid or porphyrin containing medications, or have sensitivity to light. Keep out of reach of young children. Not intended for use in children under the age of 18. Do not swallow plastic strip. Crest 3D White Whitestrips is not a substitute for regular dental care. Visit your dentist regularly. Avoid contact of gel with eyes, cloth, leather, or fabric. Gel that comes into contact with the skin can cause temporary skin irritation and/or whitening. With all whitening products you may experience tooth sensitivity and/or gum discomfort. With products that offer the highest level of whitening, such as Crest 3D White Whitestrips With Light, there is an even greater chance that you may experience tooth sensitivity and/or gum discomfort. These effects are generally mild. These effects are temporary and not harmful. If you are in need of dental work, have dental work, or have staining from medications, ask your dentist if whitening is appropriate. Crest 3D White Whitestrips are designed to hold well to teeth. Do not use on loose teeth, restorations, or braces. Crest 3D White Whitestrips will only whiten natural teeth. The strips will not whiten caps, crowns, veneers, fillings or dentures. Store in cool place. Best if used by date noted on package. See insert for more information. The Crest Light Device is designed to operate for the number of strips in this package. Batteries are included. No replacement necessary.