My fiance and I used these before our wedding. I only used them twice and I still got a lot of comments about how white my teeth looked. We bought the professional effects and planned to split them, 10 days of treatment each, which made it a good value for us.

I didn't realize how well these worked until I looked at some #tbt pictures. YIKES! My teeth were so so yellow. Last time I went to the dentist I asked about getting my teeth professionally whitened and the dentist said I didn't need it. The white strips have saved my smile and my wallet!!

My name is Jaclyn, I'm 24, I recently used the Crest 3D White Whitestrips Professional Effects and was simply blown away by the results. Let me first just say that I have been using Crest 3D Whitening Strips sporadically since 2007. I had a dull, yellow smile in high school, but after using the product for the first time, my confidence soared after people continuously complimented my smile. I simply love the product, and after my first use of the Crest Whitening Strips, I have never used another. My experience with the Professional Effects is simply my best yet. I have become a coffee drinker since starting my new career, and Crest Whiteing Strips provided me with my full, bright smile again with hardly any sensitivity. I am truly floored by this product's ability to continuously improve, and I thank you for my beautiful smile. To this day, it is usually the first compliment I recieve when meeting new people, and i truly have your Professional Effects strips and your 3D Whitening Toothpaste to thank for that. Thank you for giving me confidence to meet new people, and to share my smile with the world.

Absolutely does what it says it does. Whitened my teeth dramatically after getting my braces off. It did make my teeth sensitive for a while even after finishing using them, but that is most likely user error. I kept them on for double the time I was supposed to usually. They stick on great and dont slide around so you can actually talk without getting a foamy, slimy spit mouth. Definitely a little pricey but totally worth it every once in a while in my opinion!!

Expensive and uncomfortable...have to put those strips and endure an hour of disgusting foam in my mouth everyday. The strips are made small now so they have trouble sticking to my teeth...i can see them slightly whiter but not worth the trouble or money

I have lightly pale yellow stained teeth from drinking soda as kid as well as braces. I have tried whitestrips in the past and got frustrated that they didn't stay on your teeth. I am 1 week into the treatment and while I cant say I have had amazing results I feel like I can see a small difference. They have greatly improved the strips so they stick well on your teeth. I am hoping once I am done with the whole package I will have bright white teeth. Fingers crossed!

These work! I didn't have any sensitivity and I use them about twice a year to maintain. They stay on your teeth pretty well while using them. Pair it with the toothpaste and mouthwash and trust your teeth will be whiter. I have braces now so haven't been able to maintain and my teeth are definitely duller

This was a very good whitening system. I was able to get noticeable results in half the time. So I saved it for the next time I need to whiten my teeth. A few areas did feel sensitive while using the product, but that is to be expected. I'm very pleased with my results and would recommend this product.

I think this product does exactly what you expect it to do. Very effective just leaves my teeth a little sensitive. I use them every other day when I want to brighten my smile. I would purchase them again. The gel stays in place pretty well too, no bad taste.

I use these white strips from time to time when I have something coming up I want my teeth to look extra bright for! They work really well, and I'm always surprised by how much whiter they get my teeth. The only problem I have is that they'll sometimes burn my gums.