I wanted to do a whitening treatement at my dentist office and he first recommended me to try this product so I was extremely happy to receive a sample in the mail with my P&G;box. It really works well.

Gotta Love Crest! The whitening works well and you don't have to leave it on too long. Can be expensive though, hunt for those sales. Would recommend it.

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.

I received the product for review from the Product Review Club. I have used several other whitening products (toothpastes, and trays) with a some success. But I found myself avoiding it due to the horrible taste it left in my mouth. The Crest 3D Whitestrips I found were very comfortable and did not leak any product. I was quite comfortable to leave them on my teeth for the entire two hours.

After taking the strips off I did notice a little sensitivity on my bottom teeth, but that went away in a couple of hours.

One thing I thought was great was that the box is supposed to last you for ONE YEAR. I thought that made the price of the product easier to comprehend.

Overall I would recommend this product due to the ease of use, and whitening results it gave.

I have used other whitening products before (toothpastes, professional teeth whitening product from the dentist) and overall, I am pleased with this product.

The strips were easy to apply, but i noticed right away that they seemed like it would be difficult to keep them on for two hours. The strips felt like they were going to come off, so I just did everything in my power to keep my mouth shut. I wouldn't be able to do anything too complex (no talking) while the strips were in, for fear that they'd come off. But - who says we don't deserve two hours to ourselves?

There was no burning sensation, I was expecting something, since I have sensitive teeth sometimes, but the process was painless. My teeth were noticeably whiter, which was awesome! Two hours, whiter smile = happy!! I'm also really glad that the box comes with enough strips to maintain or "freshen up" every three months, so for a whole year. That makes this product a winner in my books!

I have never used any tooth whitening strips before, although I have tried various brands of whitening toothpaste over the years, usually with very little noticeable results. I found the Crest 3D Whitestrips 2-hour Express extremely easy to use. It's super important to make sure that your teeth are dry before you apply the strips. It definitely makes them stick on better and not slide around as much during the 2 hours that you have to leave them on. The taste of the peroxide was a little strong for me, but nothing that would induce a gag reflex! It really helps to rinse your mouth as soon as you take those strips off, and brush your teeth, but gently. I found that my teeth were a little bit sensitive for a couple of days after, but that eventually wore off. I wouldn't say that the results were super bright and white, but I did notice a slight difference, and my teeth definitely felt a lot "cleaner" and smoother after. For the little amount of time that I had to invest in using the product, I thought the result was definitely worth it.

When I first put on the strips, I found them excellent as they really stick to your teeth. Even though I have "large" teeth, there is enough strip to cover all of them. After an hour, I found some tooth discomfort. It was like a deep "ache" inside my teeth. I didn't find any gum discomfort though. After the first hour, I was excited to see if I could see any change in the colour of my teeth, but I waited the full two hours. The foam and paste did not leave a bad taste in my mouth. I only saw one "whitespot" that occured on one of my teeth, but it disappeared within the hour. A few hours after the cleaning, that dull ache occured again in a few teeth and it was noticable. I chalked this up to me being 40 years old and some tooth sensitivity.

I didn't notice a difference in the colour of my teeth though but will use it again in another 3 months to see if there is any change.

I have tried other whitening strips before and these ones are the most effective ones I tested so far.
The whitening effect was definitely visible after using them. The only downside is that I felt some sensitivity for about 1 day after using them, but now everything is back to normal, just whiter!