I like these whitening strips because they are nice but they have a weird taste. I use them about once a week or every two weeks and after I use them I notice a small different. I have used these for awhile but they often fall off of my teeth which is kind of annoying but still pretty cool product

I like these white strips. I use them about twice a week and there is a noticeable difference. The only negative thing I can say is tooth sensitivity, which is why I only use them twice a week instead of daily. Though, with every whitener you'll have tooth sensitivity.

These strips are definitely effective, especially when used with the UV light. however, they are NOT ideal for people with sensitive teeth. Even if I only leave the strips on for ~30 minutes (rather than the suggested 60mins), my teeth are SOOO sore and sensitive for at least a day or so. Great whitening results though!

I'll be honest—I didn't see much of a difference with these. I had coffee stains and I expected them to be much whiter after using these. I will say, they didn't cause me to have much sensitivity after use, which was nice and for the price, I did see a slight difference.

These are the best whitestrips. After using them for only 7 days (in a row) my teeth are perfect and now I just use them for maintenance. I started noticing a change by the 4th day. Well worth it especially when they have 50% off! These strips are as good if not better than professional zoom whitening!

These definitely work to whiten your teeth in an easy at home way. They are definitely expensive but I think that is par for the course with all whitening strips. You cannot wear these for too terribly long though if you have sensitive teeth. After about 15 minutes my teeth begin to feel like they have lightning shooting through them. Once I remove the strips the pain subsides.

It's so amazing, that it really works. I am soon 24-year-old and I have had since childhood yellow teeth. I don't smoke but i drink coffee and sometimes but rarely red wine. I have a healthy lifestyle. I was really skeptic and sure that doesn't do anything to my teeth. But I want it to try, so I used 7 strips half of the year. Now i can see in the mirror and photos that my teeth is naturally white and I have lot of confidence to smile too. Enamel is not damaged and doesn't feel uncomfortable, they also stay place. salivary flow was strong with the strips. I will use them again. I can warmly recommend, be surprised positively!

This is a really great product that I found to be worth what it costs. It whitened my teeth many shades even though I did not use it daily (I used it more like every few days for a month or so, then kind of “as needed”) and it really grips onto teeth - you can even drink water with them on. As always, you do need to read directions carefully. They occasionally cause some sensitivity for up to a day after but it's not a problem as long as it's expected. Note that the Crest website often has amazing two-for-one deals on these kits!!! Even more worth it!

I would recommend these strips. They're very simple to use and do their job. The flavor tastes nice & I have noticed they have made my teeth whiter. They haven't made my teeth sensitive at all. Make my teeth feel really nice after use and don't leave residue.

After purchasing the crest 3D white strips I was very nervous to try them because I have very sensitive teeth and was afraid of them hurting after. I tried them for two weeks and surprisingly never had an issue! I am a college student and work in retail so I'm always trying to improve my appearance. These are a great, affordable solution to do so. I now receive so many complements about how white my teeth are and people even ask if I get them done professionally. I tell them about the 3D white strips and my great experience and they are shocked! Many of my friends have purchased after hearing what I had to say and they also had great results! These are deffinatly the best whitening product a person can purchase.