YEOUCH!!!! I have extremely sensitive teeth and these just about killed me. They literally strip enamel off of your teeth (told to me by my dentist) which exposes stuff you do not want to be exposed if you have sensitive teeth. Sure, they made my teeth white, but was it worth the pain? NOT A CHANCE.

watching the commercials you'd think you can walk around town with the product but I found it foams up & since I don't wanna swallow the fluid, I'm constantly discharging into the sink. It does a good job but I'm not fond of the taste.

I find it hard to recommend Crest Whitestrips even though they do work.
The comfort factor is what turns me off from these.
I hated the feeling of the strips on my teeth and the sensitivity that they caused me was unbearable.
So, yes they do whiten your teeth. But for me, it's not worth the pain.
And it's not just pain while you're using them, I found my teeth extremely sensitive for quite sometime even after I stopped using them.

I found this never completely covered my teeth, that my top teeth would whiten but not my bottom and I would drool uncontrollably with this.

I am really glad they updated their strips. I prefer their new 2hr strips compared to these.

this product did whiten my teeth but i found that it made them insanely sensitive which is not some thing i was willing to deal with.

Like many other reviewers these strips caused my teeth to become insanely sensitive! I used them twice a day, for about 3 weeks. ... I'm always afraid that my teeth won't be completely covered. I stopped using them, and now have about 14 left.. that I will probably never use...

I usually doubt the claims products make so I have been using the strips for about five days now only on my top teeth so I could see if there was really a noticable difference and I have noticed a big difference.already I have had some sensitivity on my teeth not bad. my gums felt really sore for a while after using two back to back. My gums turned white temporarley but also went away.iF YOU CAN TAKE GUM AND TEETH SENSITIVITY I RECOMMEND THEM FOR WHITER TEETH.

I did not like these one bit.

They had a horrible taste and slipped all over the place. No matter what way I tried to use them I could not manage to keep them where they were supposed to be.

They did however, manage to whiten my teeth a bit, so I guess they did work....

I have used Crest White Strips Premium. I find it makes your teeth very white and if you leave them on to long or use more strips then directed, it almost leaves your teeth way to white. I also noticed that my teeth got extremely sensetive. I realize the Premium ones have more bleach than the originals but then you don't have to use them as long and you get quicker results if you're in need of a quick whitening! The bottom strip seemed to always slip around. Try not to let them touch your gums to much. I usually put them on before bed or sometime throughout the day when I won't be talking much because that also tends to make them slip around as well. The biggest downfalls are that they are a bit expensive and really hurt my teeth for a few days. But considering you can do it in the comfort of your own home for less than a quarter or the professional price, it's completely worth it.