IMPORTANT USAGE INFORMATION: Keep out of reach of young children. Product is not intended for use in children under the age of 12. Do not swallow plastic strip. Your dentist and Crest want to keep your teeth healthy. Visit your dentist regularly. Crest 3D White Whitestrips is not a substitute for regular dental care. Avoid eye contact. Rinse eyes thoroughly with water if gel comes in contact with them. Handle strips with dry hands. Gel that comes in contact with the skin can cause temporary skin irritation and/or whitening. Wash hands with soap and water after applying the strips. TOOTH SENSITIVITY & GUM DISCOMFORT: With all whitening products there is a chance that you may experience tooth sensitivity and/or gum discomfort. With products that provide a high level of whitening, such as Advanced Vivid and Professional Effects, there is a greater chance that you may experience tooth sensitivity and/or gum discomfort. With 1 Hour Express and Intensive Professional Effects there is an even greater chance that you may experience tooth sensitivity and/or gum discomfort, as these products deliver a high level of whitening in less days. These effects are generally mild. These effects are temporary and not harmful. See insert for more information. IF YOU ARE IN NEED OF DENTAL WORK, OR HAVE STAINING FROM MEDICATION, ASK YOUR DENTIST IF WHITENING IS APPROPRIATE. Crest 3D White Whitestrips with Advanced Seal technology 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. Avoid contact of gel with cloth, leather or fabric.