I’ve tried these in the past and even thought I could really see the difference, these strips left my teeth feeling extra sensitive for 1-2 days afterwards. These work really well but if you have sensitive teeth, I don’t recommend. It will cause your teeth to ache afterwards.

These definitely work great! They whiten quickly and easily. I used to use these all the time with no issues, but as I have grown older, it seems my teeth have gotten more sensitive & when I try to use them now it makes my teeth hurt. I just have been using the toothpaste alone instead.

This has showed a difference in my teeth a lot. I’ve only used one kit, and I just recently started my second one, but after the full ten days, you can VISIBLY see the difference. I would, (and did) buy this again. I absolutely recommend these strips.

I like the fact the strips stay in place and you can go about your normal business. I've even taken them to a girls day to share. I do wish they were wider to fully cover the back of the teeth as well. This is my preferred brand and have purchased them several times.

Hello my name is Brittney and i would like to say these whitening strips are remarkable i was worried because i don't trust bleaching as far as dental bleaching but i was amazed how these whitening strips work happy to say that my smile is a non stop in the streets and i love looking at them will definitely be keeping my smile up. Thank you, Brittney

Big improvement from the old slippery strips I tried years ago. I love being able to sip water during wearing these. I've read it's safe to use 2 of these kits per year; if so, does that mean waiting 6 months, or is it safe to use them consecutively? Thank you very much.

This really does help whiten your teeth but you got to have patience to wear these for half an hour every day! I find that whenever I use white strips I salivate more and have to occasionally spit out (they say it’s safe to swallow but I feel like it tastes like chemicals).

I recently had a root canal, which resulted in a crown. My dentist asked if I bleach my teeth? I explained I only whiten with Crest WS. He said my teeth were so white, he had to submit a special order to whiten my crown even more in order to match. He was very surprised that I've never had my teeth "professionally" bleached... THANKS CREST WS!

After just one use my teeth were whiter. I use it twice a month or so. Maybe more if I have an event coming up. I have sensitive teeth but I don’t have any sensitivity using these! Price seems high until you price a professional whitening treatment at the dentist. Trust me. The previous version of these slipped around as soon as you put them on. They will not stay put if you were trying to talk... The never version is “slip proof”. They have a better grip to the teeth to start. I still don’t like to talk too much with it on.

I didn’t have very yellow teeth to begin with, but for just five minutes a day I figured I would try Crest Whitestrips. I used the box and while I did not see a difference in my color I learned they can also protect from future stain build-up. I was under the impression that “professional-level whitening results” would be visible in just 3 days and that was not the case for me.