Thank you Chickadvisor, this was my first free product to review! It was a very exciting experiance from getting the Crest 3D 2 hour Whitestrips to trying them out. I found the process extremely easy to use. These strips are definitely for me since I have tried the one week whitestrips before and usually I get to about the third day and forget to use them or get too busy to use them. I love that Crest has made just a one shot two hour Whitestrips. I love even more that I got to try them for free. I am a pretty frugal shopper and don't think if I saw them in the store not knowing if they would work 100% the way I wanted them to that I would spend the money on them. I noticed my teeth getting whiter about 30 minutes after I put the strips on. They did noticably whiten my teeth but it wasn't a dramatic change which is exactly what the box claims "noticably whiter teeth". Using this product has opened my mind to trying their other whitining products maybe next time I will try the ones that say dramatically whiter teeth. I would buy these again in a heart beat even though they seem on the expensive side they really aren't considering that you get a WHOLE YEARS supply for only approx. $55 I think that is a pretty good deal!

I was very excited to receive the new Crest 2 hour Whitestrips as I had tried a couple of the previous versions of Whitestrips and I was due for a touch-up of my teeth. I was eager to see if the results would match that of the 2 week Whitestrips version.

My initial apprehension was that I was afraid that the 2 hour Whitestrips would make my teeth very sensitive as I have found that some of the previous types had done so. While I did also experience sensitivity after I had used the strips, it was not as sensitive as I had anticipated, given the increase in strength of the Whitestrips. Sensitivity is a subjective factor that I felt for me personally was bearable (as it was temporary), for the results that I got. Furthermore, I was happy to see that I would only have to do one treatment every 3 months as opposed to as many as 2 treatments a day for 2 weeks. For anyone who has ever used whitening strips, they can definitely appreciate the efficiency and convenience of this, as it is both time-consuming and uncomfortable to wear these strips for long periods of time in one's mouth, so minimizing the amount of time using these strips was a plus.

Also while $54.99Can may seem like a steep cost up front, when you take into account the fact that the 4 provided treatments could last up to 12 months, it is actually quite a bargain. Most whitening treatments are sold for approximately that price and are usually 3 month treatments.

In short, I was impressed with this new 2 hour version and will probably be purchasing it again. While you should be wary of it if you have particular teeth sensitivities (in that case, consult your dentist before using these), for most people it should not bother them too much.

All in all, a great addition by Crest to their whitening line.

The thing I loved the most about the Crest 3D White Whitestrips was how easy to use and convenient they were! I found the instructions in the box super easy to understand and follow and had no problem with the application of the strips. I was worried that they would feel weird on my teeth or slip around after a while of being in my mouth, but they didn't budge at all. They stuck on to my teeth great and after a while I barely noticed they were there.

I didn't have any sensitivity while wearing the strips which was great, especially since I have recently had problems with sensitive teeth. I did find though that a few hours after removing the strips I had a bit of a throbbing pain on my teeth. The pain wasn't too bad though and did go away after brushing my teeth the next morning.

The only downside with the whitestrips is that I didn't notice much of a difference in the whiteness of my teeth when I finished. When I took the strips off the only thing I really noticed it that I had some very white spots on my teeth (which did go away after a few hours), but too me the general tooth area looked the same, though it may be a bit more difficult to notice as my teeth are not badly stained.

I do love that the pack came with a years supply of whitening strips, so I of course plan to try them out 3 months down the road again. Even though I didn't notice too much of a change I would definitely continue to use these strips to help maintain my smile!

After receiving the kit it took me a few days to test it. I thought the 2 hour wait would be too much, but it was not. The instructions were simple and easy to understand and the whole process itself was easy. I had previously used the 2 week Crest whitestrips but had not been impressed. During the two hour process, the strips did not bother me, I was able to speak pretty clearly and did not feel any discomfort. I did feel some sensitivity later that night, but it was no big deal. I have not had any discomfort since then. All in all, I am very happy with the product. I had seen it at some stores, but the price tag always mede me walk away. Had I known what great results I would have, I would have purchased it a long time ago. Also, as a nice little bonus, the box had 3 more sets of strips which can be used 4 months apart - a whole year's worth!!! I will definately recommend this products to friends and family, in fact, I already have.

After I received my kit I wanted to try it right away as lately I have been drinking some red wine and noticed my teeth has become less white than usual. (not willing to give up the wine however lol). I put on the strip one night as I was watching TV. It was very easy to apply however I found it bothered me a little once they were both in. I felt uncomfortable to have them in for 10 min and wasn't sure how I would do it for 2 hours but it got better after a while. I made sure I flossed right after I did it for maximum effect and I did notice some improvement. I guess about a week later I noticed that they still looked quite good and I have started to use a whitening toothpaste to make it last longer. I think the price is quite steep for these and not sure if I would actually purchase them but I guess it is cheaer than getting your teeth whitened at the dentist office. Overall it was a good experience.

I recently tried this product on my badly stained teeth ( to much coffee ) They were incredible easy to apply and I could go about my daily buisness while they did there buisness on my teeth for 2 hours. After about half an hour my teeth started to ache and after an hour they down right hurt but I managed to make it through the 2 hours to reveal a SPARKLY WHITE SMILE!! So in the beauty sence they certainly did there job, I think if I whiten my teeth again I will go with a more gradual tooth whitening process . A week later though I am still getting comments on how white my smile is. They do seem a bit pricey but for a speacial occation were you will photographed alot ... its worth it even witth the ache , I should mention the ache lasted a day or so after and is now completly gone .

I always have trouble with white strips, so these were a bit harder to deal with since you have to leave them on for 2 hours. But, if you're looking for a whitening product to use at home this is a good one.
The strips stick to your teeth very well which is good, but also partly why I found them kind of difficult to put on. Once they touch your teeth they are stuck there so you have to be precise. The strips also seemed a bit too long for me, which is another reason why I had to be extra careful with them.
Waiting with them on for 2 hours was kind of hard for me! Plus the info says not to drink/eat/smoke/sleep with these strips on. But that's not a huge issue at all, especially if you use these at night or another "down" time.
I definitely got some sensitivity as well (which I do already have) but it only lasted for a little while afterwards. My teeth were noticeably whiter, not a lot but at least a shade or two! So these definitely work.
I like the idea of being able to do this at home, and you basically get a year's worth of product as well (if you're the only one using them). The sensitivity is always going to be a deterrent for me with these products, as well as the fact that I don't really like having the feeling of the strips on my teeth, but the results are there, and I would recommend this product for those who want to whiten at home.

So I have used this a few times now and I have to say my teeth are definetly whiter. I didn't experience any sensivity or irritation in my gums. My only thing was, it's hard to find 2 hours to sit there with the strips on your teeth but if you can plan around it then it's worth using this product!

I was lucky enough to be able to review this product (thank you review club).

I tried it out this morning....I am pretty 'good' with my teeth and I don't allow them to get too yellow but due to the amount of tea I drink, I do experience some surface staining. This products gives me the extra 'oomph' I need to get rid of those stains!

I did notice my teeth were considerably whiter after using the strips for the required 2 hours. However, consider the trade offs:

My teeth were also EXTREMELY sensitive after using the strips

The strips take a 'death' grip on your teeth so don't freak out if you can't just whip them off. It ain't gonna happen.

So I will give these a thumbs up! They do the job and as long as you aren't doing anything extremely hot or cold for several hours afterward, you should be A-ok!

Thanks to the review club for letting me try these out! Saving a set of strips for the holiday/birthday parties!

I was very excited to test this product out as I had previously used the white strips which you leave on for a half hour for X amount of days, for me the hardest part of those was actually remembering to make it a routine for a period of time, so when this product came out and promised whiter teeth within 2 hrs, I was definitely excited!

The product for me, did what it promised, it whitened my teeth about 2 shades within the 2 hours, and now they are bright and white!

I experienced some sensitivity but that is because I have sensitive teeth to begin with - so this was expected! I do not believe these caused my teeth to be more sensitive than any other whitening product that I have previously tried.

The only downside to this product is the 2 hr wait time for use - HOWEVER I did put them on and take a nap to try and make that 2 hr wait as painless as possible, and it worked. Thank you Crest for living up to your usual expectations and I look forward to continued use of this product!