Bring a bright smile to your face with this Crest 3D White Luxe Whitestrips. These tooth strips may remove up to 14 years of stains with powerful whitening. Results can last for 12 months and even longer. The strips stay firmly on your teeth with Advanced Seal Technology. Just apply one strip daily for 30 minutes at a time. They will mold to the shape of your teeth and remove simply and easily after the treatment. You may begin to see results in three days after starting daily treatment.