works great! could see a difference the first time

I tried this and I was pleasantly surprised. It exceeded all my expectations. After treatment, it really whitened my teeth. It made a big difference. I'll do it again every year.

I've tried different teeth whitening strips and kits and this one is by far the best. These strips made a noticeable difference. They definitely whiten my teeth better than anything else I've tried. The strips stick well and don't move around and they are not overly foamy. Furthermore, they are much more convenient then using strips twice a day for seven days. Crest 3D White Whitestrips 2-hour Express have become my go to for teeth whitening.

I've received plenty of samples of the Crest 2 Hour Express through the P&G;mailers. With a wedding coming up this weekend, I noticed my teeth were looking a little less bright than I would prefer. I planned to purchase a new box of Whitestrips, but remembered my stash of 2 Hour Express. I hadn't used them due to the time (2 hours is scary!), and the equally scary reviews online (some claim they had to take prescribed pain medication to numb the sting).

I've done complete cycles of Whitestrips every few years in the past, and do find I get some sensitivity from day 4 onward, sometimes a sharp pain in my front teeth which are filed down. I also usually get increased sensitivity to hot, and especially cold for a few days.

Surprisingly enough, the 2 Hour Express strips had a milder effect than the Intensive Effects strips. I found the adhesive to be excellent, it stuck very well and didn't allow a lot of saliva in. They stayed put for the entire two hours without sliding around, and allowed me to take sips of water as needed. I could talk easily with a slight lisp (I used the strips while cleaning the house and paying bills/making errand calls).

In terms of impact, they whitened very well. Enough to noticeably brighten, but not to get a full whitening. I did one strip on Monday, another on Wednesday, and the effect was enough to get two compliments from coworkers.

In terms of sensitivity, I found that I experienced no sensation whatsoever while using the strips. From 12-24 hours after each strip, my teeth grew increasingly sensitive, mostly to cold. I had to keep my mouth closed outside as the breeze was uncomfortable on my teeth. I found the sensitivity went away by the second day.

I will definitely use again as maintenance, perhaps every 2-3 months as Crest recommends. I will still need to purchase a full box to fully whiten my teeth, but for a quick solution, 2 Hour Express exceeded my expectations.

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

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

Was very excited to receive my Crest Whites Strips and was ever more ecstatic with the outcome. I’m a huge sceptic at heart but love when products prove me wrong. Huge advertising ads state that Crest White Strips have improved to the extent of whitening teeth in two hours. My thoughts...IMPOSSIBLE.

So I pried open the box, read the instructions and waited 2 hours for the results. A hour and a half into the process I noted that a tooth became a little sensitive. I panicked at first and reverted back to the instructions which does state that there may be some tooth sensitivity but would subside after some time.

5,4,3,2,1........

*Sound of the buzzer goes off in the background*

I forgot to mention in the onset that prior to using the strips; I took a picture with my phone so that I would be able to compare the difference....if any. To my surprise there was a remarkable difference. My teeth were WHITE. I was very happy with the results. I went out for dinner the next day and a random girl stopped me to tell me how she loved my smile and wished her teeth were as white as mine (no word of a lie), I thanked her for the compliment. I wanted to take credit for it but I did mention to her what I had used the night before.

Oh and one last thing, there are only 4 treatments per box. I don’t know if its because that is how long the results would last but stay tuned..............

Great product!!!!!! Really does whiten in 2 hours, not messy at all! Was better than the other products I have tried in the past!!! Really like the 2 hour whitening feature, saves time and you see results quickly!!!!!!! Innovative!!!!!!!!!

i have used the crest Whitestrip before and I am very impressed with the 2 hour strip. it is not uncomfortable- i thought it would be and besides making my gums a little sensitive, i have no complaints and my teeth are quite noticeably whiter. Thank you for including me as one of the testers.

I have used crest white strips in the past, I am used to wearing them for half an hour a day, twice a day for 2 weeks. I absolutely appreciate the 'express' pack. It is much easier than having to follow it for 2 weeks. They are comfortable to wear. I did notice results right away, after the very first use. They hurt my gums a little bit, I noticed my teeth were more sensitive than ever, and I don't usually have sensitive teeth. The little bit of pain is a small sacrifice for a great smile. I will buy them again. I would only ever buy 'Crest' because I know they work. I am nervous to try a brand that I am not familiar with. I only buy crest white strips with my shoppers optimum points, they are a luxury item, not a necessity. I think they are expensive. I would recommend them, I wish there was a nice way to tell someone to use them.