Anybody use the teeth whitening products,what the best one?

i have used the crest whitestrips and they worked great... what i did tho is i went on ebay and found some that were like 22% strength compared to like 10% or so for the ones you can buy in the store.. i was able to get a like 25 day or so treatment for the price of a ten day one at the store.. i just used half of the treatment(10-12 days) and then saved the others for a second treatment later on down the road.

Anybody use the teeth whitening products,what the best one?
I recommned you not to use any of the products if you use them ok it works but as use start getting older your teeth fall faster than they usually should fall when ur old dont believe me find research on them? anyways are they that yellow?
Reply:I like the Crest Premium White Strips- Target makes their own version which works just as well, but for a much lower price. I've tried several different products that whiten, and these are the best by far
Reply:Crest whitening strips!!!! has 10% carbimide peroxide, the dentists bleach use the same ingredient, just a little stronger, 15% or 20% , never leave them on longer then recomended, but you can extend the length of time you use it,like 8 days for instance instead of 5, if your teeth get sensitive, stop for a couple days.