If you use the "do it yourself" whitening, prepair to lose some teeth.
I know a guy that lost 5 teeth from one of those TV shopping shows. It was some gel with a mold and you turn this UV light on and it's removes the stains from you teeth. But it also has a reaction to his gums and 5 teeth dropped out about a week later.
Now it's paid $10,000's in new teeth. Pro whitening would have cost him about $800.
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