I am a dental hygienist and was Leary. I bought this for my boyfriend who had reallllly yellow teeth. The old strips were terrible, they slipped if and were annoying. These new strips are awesome. And they reallllly work . His teeth have lightened up a few shades and look great :)

This product works sometimes for me, sometimes it whitens my teeth very evenly but other times it would leave patches and my teeth really sensitive. I liked it but there's so many other, cheaper and better alternatives that I would pass on this if I wanted whiten my teeth at home.

This really works! The reason for the 4 stars is because it def hurts sometimes. I can only use for about 5–10 minutes or my teeth will be in a TON of pain for days after. As long as I don't go over ten min with them on though, I'm fine and I notice a big difference after only 3 uses

I believe that these white strips are amazing! I use them routinely about every 6 months due to my high love of coffee :) I have been using them for years! Always get compliments on my smile. I usually lean toward the milder ones for a longer time due to my teeth sensitivity.

[This review was collected as part of a promotion.] I havent used white strips in years, and theyve clearly improved. I remember them being very flimsy and hard to stick to your teeth. These felt thick and they adhered to my teeth very well. I had immediate results with these, I just wasn't able to use the full treatment due to sensitivity. The first treatment my teeth felt sensitive while I was using it, but I had a few treatments after with no effects. Then I started getting longer lasting sensitivity again. I probably would make sure to use sensitive toothpaste in between treatments. And maybe do the treatments every couple days.

This was great ! I used it about 5 years ago and I only used the strips twice to achieve a nice white color, my dentist even complimented how nice and white they looked and couldn't believe a strip did that. But I gave this only 3 stars bc it totally makes my teeth super sensitive and I never even keep it for the full time and it still hurts a lot just only after the application. I would suggest using this once every couple months.

I had not visited my dentist in years and he told me that my teeth looked better than people he had coming in twice a year. I told him I had used the Crest 3d White Strips. Before I used these he had warned me years ago that I had some staining that would never go away. I showed him. These work...I had mild sensitivity but nothing too bad. Definitely will be going to get a new box soon.

I can't believe the whiteness after 1 use! So easy to have white teeth in just 30 minutes. There might be some sensitivity for a short period of time after. Ultimately, there's nothing that tops these whitening strips. Everyone needs to smile confidently!!! :)

I use one of these kits typically once a year. I am currently using a kit and am enjoying the whitening effects as much as before. However, the strips don't fit my teeth as well as they did last year, and I can't tell which is for upper and which is for lower. It doesn't say anywhere on the box or on the directions. I've tried both on upper and lower. I settled on the longer narrower one for the bottom and the shorter wider one for the top. It's awkward. I have a harder time getting it to stay put on my lower teeth.

[This review was collected as part of a promotion.] I’ve tried Crest whitening toothpaste and the original crest white strips previously and had good results but didn’t expect to have such great visibly noticeable results so soon after only using three of the white strips. I am a daily tea drinker and use turmeric white often in my food and drinks, so my teeth weren’t as white as they could be. I usually use a teeth whitener to upkeep my teeth but didn’t notice a huge difference in the color of my teeth. After 3 uses of these white strips for only 10 minutes per whitening session, my teeth weren’t drastically whiter. The only downside is I noticed my teeth became sensitive after the first use. I was afraid of tooth sensitivity so I lessened the recommended time of use and only put the white strips on for 10 minutes. I had to use Sensodyne toothpaste in combination with these white strips to prevent further tooth sensitivity, but they do work and made my teeth at least 3-4 shades whiter than before. I plan on using the rest of the white strips in the kit, but I wanted to spread them out further throughout the next few months to give my teeth a break from the sensitivity.