teeth whitening?

what is the best thing out there to BUY to whiten teeth?
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I am a dental assistant, not a dentist, but, working in the field for almost 15 years, the best over the counter teeth whitening is the Crest Whitestrips. If you want to try professional, I don't recommend trays with actual bleach. It will tend to make your teeth extremely sensitive, and painful at times. And with some if you get it on your gums, it will burn them and slough them off almost immediately. So.....professional bleaching I would go with the one office visit, laser. Painless, yet expensive. With lasting results.
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