I drink a lot of coffee so sometimes my teeth get a coffee stain on them but when I use this kit my teeth feel and look AMAZING!! When I first used it was kind of awkward Bc it felt funny in my mouth but after using a few times you get use to it! Definitely works and will continue to use!

I've tried all kinds of whitening systems and these have become my go-to whitening product. I regularly am asked which Dentist I use for whitening, to which I proudly profess my love for this product. If you're considering the options, try this first, you won't be disappointed.

I saw a difference after 1 use. After using the whole box, my teeth are much whiter and prettier. I get my teeth cleaned twice a year, but I'm 49, and my teeth were looking dingy and yellowish. Now they are a lovely, natural white, not a weird, radiant, high-beam white. The strips are dry when you put them on, so they're easy to handle and place. I used them in the morning, when I was getting into the shower. That way, my teeth were clean from the night before, but not sensitive from being freshly brushed. When applying, I'd start from the center, poking the strip into the spaces between my teeth with my fingernail, so that the whole tooth was in contact with the strip. They didn't budge after pressing them in place.

I've been using these for a few years now. These are my absolute favorite! They make my teeth a little sensitive after using but other than that, they're great! I notice a difference when I do use them. I recommend this to anyone who needs to start using whitening strips!

These work great. I haven't tried all the flavors so I don't know which ones work best, I wish they just had the concentration number as the name and not random names like vivid or brilliant or whatever. My teeth are sensitive afterwards but what can you do. At least they actually whiten!

I swear by these! I have so many teeth whitening procedures and this product is one of the best and one of my favorites. I'm a repeat user! The only thing that bothers me is after I use, my teeth are sensitive for a few days. Other than that, I LOVE!

I bought a pack of this last year and used it once a week for 4 weeks and people starting noticing my whiter brighter smile! I stopped using it for awhile because I didn't want to over whiten my teeth. People love comparing their teeth to mine. I now use one once every 3 months.

I swear by the professional effects whitening strips. I used them a lot in college (a few years ago), and my teeth have stayed very white since (I still get comments from people). I recently bought them again because my coffee addiction has gotten the best of me and my teeth were looking a bit dull. A word of warning, however. My dentist told me a couple of years back that I have some enamel damage. I can't say for certain that it's from the strips, but I also can't say that it isn't. Definitely consult with a dentist first if you're concerned, and if you're not, these will definitely whiten your teeth.

I have been doing these kits 1 a year or so since college and I love them! They have always worked great how ever they have upgraded the strips so they don't come off so easy. They used to kind of slide down in the 30 minutes you had to keep them on, nice improvements Crest!

I absolutely love crest whitestrips. I tend to use them more often leading up to a special event. I used them frequently leading up to my wedding and my teeth were pearly white for my bridal portraits! I also have sensitive teeth and these strips don't irritate me or cause more sensitivity.