All crest products do amazing at whitening teeth! I've used these on and off through the years! I wouldn't make any improvements I think they do fabulous and have always exceeded my expectations! Great alternative to the dentist trays!

I like these a lot, and they definitely made my teeth whiter. My teeth hurt so bad when I used them. I can't stand the taste. I would spit into a garbage can because they made me gag if I swallowed.

These definitely do the job! I love them but not everyone will because of the taste it leaves and smell, since I don't mind I give them 5 stars. The work so well and almost right away!! Worth the price.

I got at least 5 shades whiter, an hour may seem like a long time but I just do chores and homework, cooking etc and set a timer. Bam! White teeth. Barely any sensitivity, if at all.

Very good at home whitening strips. It's annoying having to keep them on for 30 minutes and it burns your gums. Careful you do not burn your gums while doing these. Keeps my teeth white for up to 6 months if I'm cautious Of what I drink.

I love the results! Although sometimes it makes my gums blister if it touches them! I also have super sensitive teeth so I can also feel burning in my nerves!

These are very easy to use at home. For teeth well and are not uncomfortable. However, they do still tend to make my gums/teeth sensitive after some use.

These strips really do the trick especially if used regularly. I've used them many times but always leave my teeth feeling very sensitive and at times I can't get past the taste. But for whiter teeth they do work.

Pretty expensive and you have to use them every day but these work so well! My husband and I used them before our wedding and our teeth were very white! Wouldn't use them too often but if I have an event coming up I will definitely buy again

I decided to try these after always hearing about it. They work pretty good! I thought it would have some sort of minty flavor but you basically have a piece of plastic in your mouth.