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I've tried Crest White strips. They work, but be warned, they're strong. The instructions said to use it twice a day for .... I don't know, 3 weeks or something. I used them once a day for one week, and stopped. I was were I wanted to get to. If you over bleach your teeth, it just looks odd.
I have a friend that tried them as well, and she did the same thing (used them for about half the recomended time) and here teeth look good. So, do that, or use a more subtle tooth whitener. People (in general) don't have alot of patience, they want results now, so I think alot of the tooth whiteners are a bit stronger than they need go be.
If you teeth or gums get senstive, I think it says to stop using them for awhile. I'm too lazy to go get the box out of the bathroom to look at the instructions.
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I feel sorry for people who don't drink. When they wake up in the morning, that's as good as they're going to feel all day.
-Frank Sinatra
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