Flash an ultra-white smile with Crest 3D White Ultra White Whitestrips. The Crest 3D White Whitestrips whiten tough coffee & smoking stains so you can flash an ultra-white smile. The whitening strips gently remove up to 10 years of stains. They are also safe on your enamel so you can dazzle everyone with your bright, healthy smile. Aside from being an excellent whitening tool, the whitening strips are easy to use. Open the pouch, peel the strips from the backing liner and align them with the gumline, then fold the rest of strip behind teeth to keep it in place. Wear them for 60 minutes before discarding them to reveal a brighter, whiter smile in just 7 days, when you use them as indicated. Do not brush your teeth immediately before applying the strips. You can skip or miss a couple of applications without affecting the whitening benefit. Brighten your smile with the number 1 whitening brand in the US, Crest. For best results, use with Crest toothpaste, electric toothbrush, floss and mouthwash. See also the Oral-B toothpaste, Kids electric toothbrush, replacement brush head, water flosser, and manual toothbrush ranges.