I found this never completely covered my teeth, that my top teeth would whiten but not my bottom and I would drool uncontrollably with this.

I am really glad they updated their strips. I prefer their new 2hr strips compared to these.

this product did whiten my teeth but i found that it made them insanely sensitive which is not some thing i was willing to deal with.

I like this for what it does...it whitens your teeth and I like that about this product. But I don't think that it's for me. I guess it's for someone who doesn't really have a problem of having too yellow teeth, but this just didn't cut it for my bottom teeth. It was always sliding all over the place and I ended up drooling so much (very sexy) and I hate that it doesn't whiten the back of your teeth. For the price I wouldn't repurchase this.

Noticed a difference within the first couple of days ....would really like to get this product again - it has been a while!!

Crest Whitestrips are easy to use, and work quite well. They are a thin plastic strip that sit on the teeth for about 30 minutes, and I have seen noticeable results after one use! The only downside to this product, is that it can make your teeth VERY sensitive afterwards, which can last for an entire day. I have tried toothpastes to help with this sensitivity, and even painkillers, but to no avail. The sensitivity and pain is no where near as bad as the trays I tried from my dentist, which were unbearable. If you would like a quick way to whiten your teeth, and do not care about a little sensitivity in order to achieve a great smile, then I would definitely suggest this product. It is the best whitening system I have used so far.

I have got to say this product works great! Fast, easy to whiten and brighten teeth. You will already start to notice the difference in color very fast. But it makes you teeth be sensitive.

Like many other reviewers these strips caused my teeth to become insanely sensitive! I used them twice a day, for about 3 weeks. ... I'm always afraid that my teeth won't be completely covered. I stopped using them, and now have about 14 left.. that I will probably never use...

I have got to say this product works great! Fast, easy and convenient way to whiten and brighten teeth. Seven days is all you need and in as little as 3 days, you will already start to notice the difference in color. The only thing I would say that is a little uncomfortable is the sensitivity of my teeth I experienced after about 4-5 days of using the product, but it was only temporary and sensodyne helped tremendously!

I first got into this when I was on holiday in New York and ive been addicted ever since. I couldnt believe how white my teeth looked after a few days. Was an immediate improvement! Great product and affordable too. The one problem I had was that it made my teeth a bit sensitive and I had to stop puttin the strip on one of my teeth! But i carried on using it and was so pleased with the end result!!

I usually doubt the claims products make so I have been using the strips for about five days now only on my top teeth so I could see if there was really a noticable difference and I have noticed a big difference.already I have had some sensitivity on my teeth not bad. my gums felt really sore for a while after using two back to back. My gums turned white temporarley but also went away.iF YOU CAN TAKE GUM AND TEETH SENSITIVITY I RECOMMEND THEM FOR WHITER TEETH.