I've heard that if you eat or drink certain things after using a teeth whitening product, your teeth will stain again with whatever you are consuming? Like if I drank koolaid after using a whitening product, my teeth will turn red/pink? Is this true? Has this happened to anyone?
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Long term use of over the counter tooth whitening products will cause sensitivity, due to the acidic nature of the preservatives they put in there. Whitening in general needs to be monitored, because your teeth can only get so white, then you will start going the other way, you will actually start getting darker. So it is always good to have a hygienist or a dentist to monitor your progress even if you are going to use a otc product such as Crest white strips, so you don't do any permanent damage to your teeth.
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