These things are awesome! And for the price, they just can't be beat! Definitely give them a try. When I first start using them, I have to space them out to every other day or my teeth get wayyyy too senstitive but after about a week of that, I can go to daily use. Anyway, after using them for about a week, I suddenly had several people asking me if I had been tanning, lol. At first, I was so confused (because I had definitely not been tanning), but then we all realized I looked darker cause my teeth were whitel! Crest Whitestrips are awesome and work fast! ;-)

Not a 2 pack!! I buy the two pack for gifts for my teens - they used to come in two separate boxes. Not in Received new packaging that puts both sets in one cardboard box with one set of instructions. Not a twin pack. I'll have to figure something out for the gift. Like the product, not exactly happy I wasn't made aware of the packaging issue before my order (website showed old twin pack packaging.

[This review was collected as part of a promotion.] The crest 3-D white strips are easy to use and effective! They application and removal was simple. The shade difference from begging to end was incredible! I have used whitening trays in the past, and my teeth were overly sensitive afterward and these white strips did not cause any sensitivity at all.

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 :)

I have average kind of yellow tinted teeth and decided that needed to change for a photo shoot I was doing the next day! I tried these because of a friends experience and I noticed the difference that day! Love this and recommend it to anyone looking for a teeth pick me up! Especially for broke college students like me!

I read a lot of good reviews so I ordered the product. The shipping was great and they got here very fast but things were only downhill after that. For one, my teeth aren't very stained at all so I thought this would go great but I can only see improvement on like 2 or 3 of my teeth and even on those the results are bare minimal. The other big issue is you don't even get the full 48 strips or whatever it's supposed to be because half of the box doesn't even stick to your teeth for whatever reason. Very disappointed to say the least.

Used Professional Effects in the past with AMAZING results, as have many of my friends and family. So many people swore by it — and for good reason! It did exactly what it promised. So why on earth change something that was already perfected and loved by many? Change is not always for the best. The purple boxed Luxe should have been a permanent product. These new strips neither adhere sufficiently, nor whitens evenly, or even half as well as the former ones. Extremely disappointed in the change of line. I'll never understand why companies feel the need to "update" products that WORK. If it does what it's supposed to and impresses people with the results, then leave it alone! Loyal consumers will thank you by coming back for more. As it stands now, I will not be wasting further money on this overpriced junk. A real shame, since I would have repeated my purchases on the older strips for as long as it was available/needed. Don't cheapen your products. You were doing good work before.

I used the product 3D Crest Whitening Stripes a few months ago so I could have the whitest smile at prom. Within a week or two, I was more than happy with the results! All my friends were complimenting how white my teeth were and it gave me the biggest confidence boost ever. I've always wanted a beautiful white smile! To keep up with the wonderful whiteness, I use 3D Crest Whitening Toothpaste that tastes better than toothpaste should taste. It's honestly the best product I've ever used to keep my teeth clean and white. I plan on using the whitening stripes again this winter because I just LOVE having a perfect white smile! It's fast, easy to use, and 100% the best decision I've ever made.

I've been bleaching my teeth for the better part of the last ten years and Crests Professional Effects have superseded everything I've ever used. I still remember when even Crest made the slippery, difficult to Stick on to your teeth whitestrips-but they still worked and gave me a beautiful smile, which kept me coming back for more. Fast forward to now and I always recommend Professional Effects whenever someone asks me about or comments on my teeth (which is quite often because I'm diligent with my teeth whitening). Although I'm now torn between trying the new Luxe Flexfits that are branded as "the whitest white" or staying with my traditional PE's, I know either way I'll be completely happy with my teeth. Also: I have extraordinarily sensitive teeth but I haven't had a problem with using Crest whitestrips at all, which is why I'll stay loyal to my favorite brand for dental care. Try the 3D toothpaste and mouthwash. I use them all year round and love both products as well.

I have been using Crest Whitestrips since they came out. I have tried many whitening products, but nonthing compares to the easy, fast, no-mess way of Crest. It is a great way to maintain a whiter, brighter smile and cost effective too! Always trust in Crest!