Crest white strips work amazing!! Every time I use these all of my family and friends notices right away how white my teeth are! Even after two days people started noticing. My teeth by the end of a week on these things were a completely different shade.

These work! I didn't have any sensitivity and I use them about twice a year to maintain. They stay on your teeth pretty well while using them. Pair it with the toothpaste and mouthwash and trust your teeth will be whiter. I have braces now so haven't been able to maintain and my teeth are definitely duller

I wanted to whiten my smile before the holidays, i drink a lot of tea, so i purchased 2 boxes of the Professional effects white strips. Thinking that if i used two boxes back to back i was sure to have a whiter brighter smile, WRONG!!! I have used them and honestly I can't tell a difference and neither can my husband and family. My teeth aren't horribly dingy but they aren't bright white either, I don't understand why they didnt work. So needless to sayi just wasted $80.

I was really impressed with these whitestrips! I have tried them before but they always would be slippery and not stay on. The advanced grip strips were great! They stayed in place, and I was amazed that I could do so much with them on. They whitened me teeth great too - and my teeth were not sensitive at all after using the product. I would definitly use these whitestrips again!

I love these whitening strips. Their a bit pricey which is annoying but they definitely work and get the job done. I leave them on for a pretty long time, at least an hour, and usually notice a visible difference in the shade of my teeth. I'm very satisfied and will repurchase in the future!

I got the crest professional white strips as a quick fix for my dull & slightly yellow teeth. I'm a big coffee & sweet tea drinker. The product does its job, it works really well actually. BUT it makes your teeth very sensitive, when I breathed cold air it hurt my teeth, so yes it does work yes I do recommend it but be cautious, I'd recommend getting some sensodyne toothpaste as well.

Wow, this thing really works. After a couple of uses, saw a big difference in the color of my teeth. Downfall is it causes sensitivity to my teeth for a couple of days after using it. I use it less often now. I would recommend this to others. Try it out!!!!!!

After 7 stripes of this kit, my friends and I can definitely notice the difference from the photos and also absolutely stand out my red lipstick! Please do try and all the review you can find on youtube can totally help you with the knowledge of this products! Def will use up the whole box and cant wait to see the final result!

I tried the whitestrips after lunch and just keep them attached my teeth while I was running errands. I took them off in about 2 hours, didn't notice too much difference. However, about an hour later, I looked at my teeth in the mirror, and I could tell my teeth are much whiter. It takes time for the results to kick in but definitely worth it!

Eh? I'm not crazy about these. I received these for Christmas one year as they are expensive! However I did not see huge improvements in my teeth being whiter. I also didn't really like how the product wrapped around my teeth I think it adheres nicely for a few minutes but then got really sticky and nasty. I don't think I would recommend .