These are hands down the best whitening strips I have ever used! I can notice a difference after just one use. Don't leave on more than recommend time or else you can have a sting in your tooth (if they're sensitive).

The Crest 3D White-strips kit does it's job well! There's a sufficient amount of strips inside that will last you a worthwhile. I haven't tried others regarding the fact that these work amazing.

Really like how these work so good but they make my teeth very sensitive and I have to stop using them for a few days. Also I can barely keep them on the whole time before they become to sensitive. Recommend though.

I don't recommend this product at all. It made my teeth extremely sensitive and I began getting cavities where they were applied even if I brushed my teeth afterwards.

It's honestly very expensive for what it is. It also hurts my teeth as well. It does kind of worth, but the product often gets stuck before being able to stick it on properly. Wish there was a better alternative for white teeth

When coffee, tea, and life keeps trying to darken your smile, use these little miracle strips to combat that by brightening and whitening your teeth! Smile Big and Bright with Crest 3D White Whitestrips! :-D

Work well. I don't use these too often. But i often get compliments about my teeth. The Colgate whitening toothpaste and these strips help keep y smile bright.

I've been using these strips for years. I don't notice a whitening affect in my teeth immediately after use. It says to use regularly and maybe it has whitened my teeth a bit but it hasn't made a huge improvement

To get the best results you need to use it every single day every time you use it you see the difference in your teeth getting wider it takes a fee mins 

This product is good. It's real and noticeable. Not magical. I recommend brushing your teeth extremely well and “drying them” prior to application. Don't overdo the time and don't use them all the time. But yes good investment for sure.