These are very effective. I've used professional whitening treatments from the dentist office and these work just as well for me. Theh are much less expensive than the professional whitening treatments and perfect for getting your teeth pearly white!

Many of our patients are not ready for a professional whitening experience but would like their teeth to look whiter and brighter. For those patients, we recommend that they start with Crest 3D Whitestrips. If they achieve their desired effect with the Whitestrips, no further action is required from us. If they still would like to go brighter, then we have them come back in for professional whitening.

This is my third usage in 10 years. I am happy each time. I also am blessed with unnaturally white teeth and the contrast to my skin colour helps :) Most people make the mistake of NOT using the strips consecutively and therefore the results are not as great.

I used these when I got my braces off, and while I saw some results... they weren't drastic. Probably not worth all of the money. If you want whiter teeth immediately I would use the Hello Activated Charcoal Fluoride Free Whitening Toothpaste With Fresh Mint Coconut Oil.

I love these! They work so well and actually stay on your teeth opposed to sliding around. The only negative I have in regard to these is that fact that when I say they stay.....they stay! Peeling them off takes some effort and you're left with the residue from the “glue”. Other than than, I love using these!

Working the front desk requires A1 customer service and lots of smiling. So when I noticed my teeth needed an extra lift I tested out the Crest Professional Effects and loved my results; everyone seems to notice my new and improved White-Bright smile! Thanks

These were actually recommended to me by my dentist so I started using them I have had a couple of days where my teeth were sensitive but I don't know if that was completely from the white strips most of the time I can use them and they are OK and they do really good at whitening my teeth

The result is really good. Even after the first application, the teeth became noticeably whiter. But! I had a very bad toothache over the next day. This is a very unpleasant sensation. I'm not ready to try it anymore. I gave the remaining whitening strips to my friend.

They work but are expensive. But at least I can use them intermittently and when needed a few times versus just one time expensive teeth whitening. I'm not sold on the shape because they are straight at the top and would prefer a slight curve to fit the teeth better. I use them and don't see a remarkable difference like in office whitening, but they do work and are more affordable.

I drool so much when I use these and I can't use them more than once a week or my gums and teeth get sensitive but weekly is enough. I like to put them on then get in the shower. It allows me to spit if I need to and the time goes by faster. Not a perfect product but the best I've found of its type so far.