Works pretty well

These white stops do make a difference but only after a while of use if you keep using them. It doesn’t make your teeth pearly white but that’s normal it just makes your teeth more white than they already are.

These whitening strips are designed to whiten your teeth faster than the original one. I find that the results are not as apparent as the Profession Crest Whitening strips. I would recommend investing in the Professional strips even if they are a bit more expensive because they work better in the long run.

I got a few samples. I only use the strips for close weddings. Teeth did whiten a bit, but I wouldn't use these every day or week. It's bad for your teeth.

CREST 3D WHITE STRIPS 2 HOUR EXPRESS;

Great for on the go busy individuals, who want the results of a beautiful white smile without the patience of waiting or going into the dentist.

Great results after completing the 2 hour express white strips.
Follow up with daily use of Crest 3 D white toothpaste for daily maintenance.

I am very fortunate to have never worn braces and still have straight teeth. My lower teeth are a little crooked and I did find it more difficult to get the strip to cling to all of the ins and outs of my teeth. Despite this, I am very impressed with the results. My boyfriend noticed right a difference right away although, this is not to say that my teeth were really yellow to start with! They definitely needed brightening and this did the trick! I will say that I do have some sensitivity whenever I use the strips for a few days following the treatment. I will use a sensitivity toothpaste to help with this however if you are willing to wait it out regular toothpaste is fine. I do find the price a bit high but if you go online you can often find coupons to help offset the cost. I also recommend using a whitening toothpaste to help keep your pearly whites white.

I didn't find that there was much difference for whitening vs their normal product line.

combined with the toothpaste this product rocks!!!!! would recommend to anyone

I think the Whitestrips are moderately effective. They made my teeth at least a shade whiter which, as a smoker and coffee drinker, was great. My issue with them was how extremely sensitive they made my gums. For about a week after, they just hurt.
I personally wouldn't use them again, but I cant say they would make everyone's gums sensitive, so generally speaking, in terms of effectiveness, I'd recommend them.

works great..definitely improves the whiteness of your teeth. I highly recommend.

Received a free sample in the mail from Proctor and Gamble and tried it for the full 2 hours - First I LOVED the way they clung to your teeth, did not move around at all and you had to literally peel them off after! This was a huge improvement from 30min versions I had tried before! I did see a significant difference in the degree of yellowing on my teeth but not as great as hoped (as they are bad lol) After a few treatments I think these would really do the trick! You would need to use multiple strips to cover your back teeth as well.