[This review was collected as part of a promotion.] Absolutely love these white strips! I immediately notice a big difference just after one singular use. I have sensitive gums and they do not seem to irritate me.

Truly love these! They are kinda pricey but super worth it. I usually use them every two months and if I forget then I will use them two to 3 times in one mouth to get back to my white and then just once every two months! Definitely recommend!

My dentist always compliments the whiteness of my teeth, and it's all because of Crest Whitestrips! I refuse to use any other product on my sensitive teeth. Works beautifully! Highly recommend!

Highly recommend. The price of these are way worth the results. Noticeably whiter teeth after just one use of these strips. will always use these when I feel my teeth start yellowing again, which is usually months after completing these treatments.

This product is effective. It works as advertised. Prior to the product, i had no experience with whitening my teeth. Literally after one use, my teeth were 10x whiter. This is a really good product to try and even use!

Perhaps these work well for people, but I couldn't even get them to stay on my teeth so I have no idea about their whitening effect. Frustrating to use.

These stick to your teeth and only come off when you're ready to take them off. They're a good confidence builder if you want to add an extra sparkle to your smile! They are awesome and whiten with consistency

I take this strips about once a week and I love them they really make my teeth really white. The only thing I don't like is how they slip off my teeth.

I love these. They are $$$ but well worth the money. Make sure to follow the directions because if you over use or leave them on your teeth for too long they will make your teeth VERY VERY sensitive.

i'm not all the way through this set of whitening strips and i can see a difference, but they make my teeth really sensitive. i notice that after using them, my teeth are extra sensitive to cold temperatures in particular, but they definitely work.