Thank you, breb40, for leaving your feedback on Crest Whitestrips. While we're glad to know they're working as expected to bring a sparkle to your smile, the pain you feel is something we're concerned about, since our strips get thoroughly examined to ensure their safety when used as directed. So that we can share further details with our Health & Safety Team, would you mind giving us a call at (800) 395-8423?

Katie, above all else, we expect you to have an exceptional whitening experience whenever you use our Whitestrips. We're sorry that you didn't get the results you were expecting. Sometimes the tougher stains may need a second box of Whitestrips, or you may find more success using one of our other Whitestrips. We'd like to hear from you about your experience, and help. Please call us at (800) 395-8423.

We're very sorry that you experience sensitivity when using our Crest Whitestrips. Products containing the whitening ingredient hydrogen peroxide may cause some sensitivity, but it is temporary and will fade. For the same great whitening results with virtually no sensitivity try our Crest Whitening Emulsions! If you have any questions or if we can help you further with this, give us a call at (800) 395-8423.

Shining a radiant smile is so important to us, so we're sorry that you're not getting long-lasting results while using this toothpaste. This toothpaste can remove surface stains, but they can reappear if you consume wine and coffee, smoke, among other things. We'd like to hear from you about this and help. Please call us at (800) 492-7378.