Kind of costly but worth it! It gets the job done ! I would not use this daily because it will cause a lot of pain over time with your teeth so be aware of that. Use every now and then! This stuff makes my teeth so white and I'm never going back!

I use these throughout the year to help whiten teeth. I don't use them often but they help and keep my teeth looking white. I have repurchased these several times and will continue to repurchase when I run out.

These things work really well on my teeth. My sister said they made her teeth really sensitive after using, but I had no issues with them. You notice results very fast, after like 2-3 days!

This product works really quickly to achieve the results you want for whiter teeth. I don't use it too often though because it causes sensitivity pretty badly

I always get asked how I get my teeth to be so white. People can't believe it's done at home when I say it's crest 3D whitening strips. They're super easy to use and are completely fool proof.

Great knows how to whiten teeth. After I go through a box, I always get compliments on how my teeth look. The only improvement would be to find a way to not irritate the teeth so much while keeping the whitening product strong.

I drink A LOT of coffee, and we all now how dingy that can make your teeth work. Most of the time, products like this taste horrible, but I don't mind the taste of this. I get professional dentist results, but for way cheaper!

I don't really know if these worked or they just made me think they did but it kind of burnt my gums when I used these and like I said I used them for a week and I couldn't really see any difference but I'm not sure

they work but watch out for teeth sensitivity, i like this for a quick “treatment” before events and for quick whitening methods, consistency will bring better results but i wasn't.

I love these, but they are not for someone that has sensitive teeth… They can give a zing affect which is not comfortable at all, but I've been a repeat user in between zoom appointment at the dentist.