Being able to shine a brighter smile is one of our top priorities, and we're sorry you didn't notice a significant difference. While our tests and studies have shown that our Whitestrips are effective, some of the more stubborn stains may need a second box to achieve the results you're after. We'd love to hear from you about this and see how else we can help. Give us a call at 1-800-492-7378, M-F, 9 AM to 6 PM EST, to talk further.

Getting your Crest Whitestrips to stay is easy when you know a couple tricks. Wear the upper and lower strips separately. Use a mirror to properly apply the strips making sure the strip is in good contact with the teeth. Don't touch the strips excessively with your tongue. Finally, you can try gently tucking the strip in the spaces between your teeth with your fingernail, then folding it behind your teeth. If you have any other questions, or if we can help you further, please let us know by calling (800) 395-8423.