Keeps my teeth lighter than they would for all the coffee and tea I drink. I whiten my teeth at the dentist before but these strips do a good job without the expense. I do occasionally have some difficulty with them staying in place but not often.

Stunning! They truly whitened my teeth! My teeth did get a little sensitive but my dentist just said swipe some Sensodyne on them and let it set. All good!

Definitely whiter teeth. This kit has 20 days everyday and then 11 maintenance strips once monthly for a hour. I’m on day 13 already and my teeth are so much whiter even the lower part of my bottom teeth. This kit was a great idea and works well. Definitely recommend this kit.

They really work and my teeth are so white! The strips made me look like I just got a professional whitening at the dentist.

Good price, not enough time to fully evaluate for an accurate review. My Dentist highly recommended this product and advised that Sam's Club offered it for a low price.

I must admit, I was pretty skeptical that these strips would really work. I tried them just out of curiosity, but they not only worked, but worked so well--people were asking if I'd had my teeth professionally whitened.

My dentist recommended I try Crest white strips. They fairly expensive so I checked Sam's and they were $49.95 for 20 sets you use for 20 days and 11 sets you use once a month. They work. My teeth are starting to look whiter after 5 days. I recommend them. Great value.

The strips work, but can be tricky. You need to dry your teeth as much as possible before using the strips and they don't go over your molars. They do brighten your teeth quite a bit though.

1. Crest 3-D white stripes are expensive per each use. 2. They were difficult to use, and I repeatedly had problems trying to keep the bottom strip on my teeth. Three times the strip would not stay on my lower teeth, and I had to throw it out making each treatment even more expensive. 3. Each time I use the crest 3-D strips, my teeth became uncomfortably sensitive and remained so for about two days. 4. In fairness, I do have acid erosion on my teeth that could have contributed to the sensitivity. However, I have used other whitening products that did not cause the sensitivity that I experienced with crest 3-D strips. 5. I won’t buy these strips again and am considering returning them to the store.

Too strong for me. They burnt my tongue the minute on put them on my teeth.