When it comes to at-home teeth-whitening kits, the most convenient and cost-effective route is strips. Crest’s 3D Whitestrips is expert recommended time and time again because it’s one of the few kits with an American Dental Association stamp of approval, meaning it’s both safe for your teeth and effective. This version is slightly more powerful than the brand’s standard kit, so if you want something a bit stronger than the average whitening strip, this is for you. Typically, the added whitening power does cost extra, but today it’s just $30. That’s even cheaper than the standard-strength kit.
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