Does anyone know how teeth whitening kits work?

Like the home whitening ones.
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Apparently there are levels of a special peroxide in the strips and gels you apply to your teeth. What this does it create a reaction on your tooth surface which, in time, removes any staining and discolouration. Different products have different levels and strengths of this peroxide. Be careful if you are going to use them as you may have tooth sensitivity. I have it very bad and have to use Sensodyne or Crest for Sensitive Teeth when I want to use the strips or gels. Also, don't use them too often as they say it can erode your tooth enamel, which can make your teeth appear a little transparent. GoWhite doesn't use the same harsh perioxide others use, so it may not be as effective initially and also does not cause sensitivity in those who are sensitivie. I have not yet tried it, but I know you can get it at Sephora - for a hefty price! There is also laser whitening that can be done in an hour or so under a blue light. This also whitens, but is very expensive and requires you to a dentist's office. You do walk out with bright white teeth though! Might be a good option if you are getting married or want a quick fix for some important photos or event. Hope that helps.
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