Does crest whitening expression whiten your teeth? i'm going to a wedding in four weeks...i really want my teeth to be white...they are not yellow or anything lol ...i just want them to be whiter...for all he expense for the wedding i don't have money to go to the dentist.i just brought crest whitening expression..i'm planing to use it 2x a day for 4 weeks...and i was wondering will it work? and if it does ..will it work by 4 weeks. ------thanks :)
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Yes it does work, but it depends on what type of staining / discoloration of teeth you have, intrinsic vs. extrinsic.
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