tried it and i have high expectations. what i did is i took pictures of my before and after procedures. pictures are taken both with natural light and indoor lights. when im done and compared the four (2 for each) pictures... there's not that much change... its just like i brush my teeth. and doesn't even smells good. so dissapointed.

I find they work fairly well. Much cheaper than at a dentist but the results aren't quite the same.

I loved it. I noticed my teeth were whiter after one use.

Whitened my teeth quite a bit but found they seals to your teeth almost too much as my gums were sensitive for hours afterwards. Only left it on for an hour and a half as well.

I am not a regular user of whitening products but I got a sample of the Crest 3D Whitestrips so I thought I would give them a try. I was a bit concerned because several years ago I tried another whitening strip and it irritated my gums badly. The Crest 3D white strips stayed on my teeth well and I didn't feel any of the gel leaking into my mouth. I had no gum irritation but did experience some minor tooth sensitivity. The product did whiten but I would not say you are going to get a gleaming white smile unless you were already pretty close to having one! Although they are pricey I think if it was in my budget I would use them....at the very least before a special occasion.

These white strips definitely work!! They stay on really well compared to other strips that I've tried in the past, and the results are undeniable. However, they are kind of harsh on your teeth and I can't keep them on the whole 2 hours. I usually give in around the 1.5 hour mark. I also take 2 Advil before I put them on because unfortunately my teeth get really sensitive afterwards and pretty much for the whole day the next day... but then it soon goes away.

I like that you only have to do them 4 times a year too, compared to the ones you have to use much more frequently! I guess that kind of makes the pain worth it.. and the damage they're doing to my teeth? Oh well, I with the amount of coffee I drink, I'm just glad a product like this exists to reverse the effects.

On the other hand this product is pretty expensive... I think I've seen then in Shoppers for close to $69.99.. which is kind of insane. I've found them in Wal-Mart before for closer to $50. Still expensive but would be willing to pay for that price.

l tried white strips before and found them uncomfortable to wear and keep on, the two express definitly does not have that problem! they stay on very snug and there was no leakage into my mouth like the other ones i've tried. but the results weren't all that great..l hardly even notice a difference. and the pain l endured from using the strips were insane! too much pain too little result :(

I have used Whitestrips in the past so the thought of getting great results in a short time seemed great! I found they stuck on to the teeth well, and we not that bad to deal with for 2 hrs. I did have sesativity to these which I have never had with other teeth whitening products. The results were ehhh not horrible they did whiten some but not as much as when I had used the products in the past ( maybe my teeth just won't go any whiter?) Anyway they are not bad if you are in a pinch and short notice want to get whiter teeth but if you have the time go for the full lenth program I found it gave better results.

I've tried this and it was very unpleasant. I don't even have sensitive teeth! use it if you are willing to take the pain.

I have used this product on my own in the past and have found it to be great at getting my teeth white. I did have some tooth sensitivity but I was able to resolve this issue by not leaving the strips for the full 2 hours. I have to say that they were easy to apply and did leave my teeth pretty white. Great product