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Anonymous
seriously, just use those whitening products from walgreens or whatever. don't do something stupid like apply them 3x a day, and they won't weaken your teeth any more than drinking coffee daily will.
the strips aren't as harsh as the paint on/gel types, but they take more time to work. look at the active ingredient, i believe the usual concentration is 10-30%. i suggest 15-20%.. the higher concentrations can be irritating for your gums. if you're doing any damage to your teeth, you'll notice tenderness or redness in your gums first.
also, always swish with water after drinking soda or coffee, and wait at least half an hour after drinking anything acidic before brushing your teeth.
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