The Whitestrips kind of make me want to puke...ew. But I use that Pre-Brush whitening stuff, I think it's Listerine or Arm & Hammer, and it has whitened my teeth dramatically. It's just like mouthwash, but it foams up and you brush your teeth after you use it. It's like 7 dollars a bottle, but I'm still on the same bottle from Spring Break!
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