do the crest teeth whitening strips really work??

i was thinking bout using them
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They difinately work!!! But the worst thing about them is .. it doesnt get everytooth so .. it whitens about hmm the 10 top and like 8 lower .. so when you open your mouth .. if you had discolored teeth, you still see that beyond the whitend ones! So i definately recommend Crest Whiteing Strips .. after your done with like all of them .. i asure you to get Crest Night Effects! That way .. since the strips only cover like some of your teeth you can put Crest Night effects on any teeth you want! So once your done with one do the other! Your teeth will seriously turn out wonderful! All my friends are like .. how the hell do you have such white teeth .. im like haha i dont know! i would never tell them about the strips or the night effects :]] Good luckk.
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