Works really well. You can see results after one time. It can make your teeth and gums sensitive if you use it more than once in a row.

It worked okay! I don't really like the taste after. Also my teeth are sensitive and these made is worse.

My FAVORITE teeth whitening product! I can't use this every day because my teeth are sensitive. The price is pretty high but it WORKS!

Works great over time! I saw really good results after 2 weeks of using! I wish the price was a little lower, but overall a great product.

Works well. Works quick. Teeth are noticeably whiter. A little expensive. Has a tendency to make my teeth sensitive after too much use.

This is the best whitening product I've used so far. It whitens really well without making my teeth sensitive or causing any nerve pain.

I do not like these at all they are super harsh on sensitive teeth and oddly have a burning effect to it

I followed the directions and my smile is definitely brighter. I did not experience any sensitivity. I would recommend you try this product first.

I feel that this product works fair but I don't care for the gum sensitivity. The gum sensitivity is a draw back for myself.

I loved using these Crest Whitestrips! My dentist recommended trying them! At first, they were a bit uncomfortable, but after very easy to use!