I am a daily coffee drinker, and it was becoming obvious; when I smiled, it looked like a whole row of corn kernels was peeking out. Not a good look. In 2004, I first tried the original Crest Whitestrips, with smashing results! It's been a little while since I've "stripped", so I figured it was about time to do it again, with the newest generation of tooth-whiteners. Well, wow. Even from using the FIRST STRIP, I could see the cleaning, foaming action at work through the clear plastic of the strip (translation: coffee crud is disappearing!). One big difference is how WELL these new strips adhere. The old ones slid around a lot more, were larger, and had more gel on them; I actually had a difficult time getting these new Crest 3D Whitestrips OFF! Once I did, and swished/brushed/flossed the gel away, there was a slight difference on Day 1. Staining around the gumline had already lessened, which is consistent with the effects of the old strips, too. There was a bit of tooth sensitivity, but only for the first couple of days. Skip a day or shorten your application time, if it's really bugging you. Each day's results were progressively better and better, and I'm not afraid to smile anymore! Great product. I recommend!
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