I used the most basic line of crest's whitening strips and still saw nice actual results over the short course of time I used the product.

This is the only product I actual noticed a difference in my smile! Much whiter. I pair with the 3D tooth paste.

Iv been using these for years. I always get compliments on how white my teeth are. I recommend these to everyone.

I LOOOOVE these. They seriously do the trick in 30 minutes. They are effortless to wear and don't have a bad taste.

Does not make my teeth super sensitive. Very effective in whitening my teeth and the results last a year.

I noticed a difference in the first use. My teeth were way whiter and made my teeth glisten! They are a little pricey but definitely worth it!

Love. If you have sensitive teeth or gums I don't recommend. But they do a fantastic job and whitening my teeth.

Haven't used this for a while, but when I did I liked it and thought it worked well for an over the counter product.

Works so well! Can tell a different in one use. Will continue to buy. I use them constantly and they don't make my teeth sensitive

Made my teeth extremely sensitive!!!! I was in so much pain, but other than that if you don't have sensitive teeth, I would say I saw a whiter result