I've used it two times and already I have noticed a huge difference in the whiteness of my teeth. Plus you only have to wear them for 5 min.

The results you can get with using crest white strips is amazing, but IMO not worth the throbbing PAIN for those with sensitive teeth. My gosh, the last time I used the white strips was due to a very imporatnt event where I would be photographed so I wanted to have pearly whites. Started using them 3 days before the event and my teeth were in soooo much pain from the first application. I was in so much pain I ended up not going. :S This was my experience, and i'm sure YMMV. So I can't honestly give this a bad rating since for many others this may be the teeth whitening product for you.

I enjoy the results I get from using them however my teeth hurt a couple hours after using them for some time which sometimes makes me hesitant to continue to use them

Recently quit smoking and thank god for these my teeth have never been so white, people keep asking me how and I'm not keeping it a secret.

It had been a while since I had used any whiting products on my teeth. As a coffee drinker and occasional smoker, I am always self conscious of my teeth and worried about their whiteness.
I am also a coupon queen, so when I received my coupon for Crest #d White Professional Effects Whitestrips, I thought why not?!
The last whiting strips I had used, it has been so long that I forget the brand name, but they were terrible. I was expecting moderately the same type of experience, but to my surprise!
These strips actually stick to your teeth, like tape! The other ones I had used previously did not. It was hard to keep them in the right spot.
So for practicality - these get a 10/10
As far as effectiveness goes - 8/10
I noticed a definite improvement, and maybe it's just me but I am always expecting a bigger shock once I take them off and look at my teeth.
And price? 7/10
Whiting Strips always tend to be pricey, but I waited until they were on sale AND I used a coupon. hehe :p

Tried this & I really do see the difference. You have to try it to believe it. I have older teeth & it still worked. I will buy it again. I tried it on half my teeth so I could see the difference, good way to see how it works.

Great product. Really works well to whiten teeth.

So far the best white strips I have used. Immediate results and after a week my teeth are glowing. The only thing is, my teeth became so sensitive to heat/cold change, but that is the price for the amazing results you will get.

This product is easy to use and results are noticeable by the end of the treatment period, they are a little pricey so I`m not sure I would purchase again but the product does work

the advance level for works fantastic.