I've have done a few rounds of these white strips for different events. I always get great results! I start to notice the difference right away.

i would give this five stars but all the enamel on my teeth are gone. used to over use the heck out of these. but they get the job done.

I've tried a bunch of different whitening strips and I've found crest professional effects to be superior to all the rest!

Love to pair these with the toothpaste. They are great, but a bit pricey. So I don't buy them often. But they're great.

I think these work great for maintaining white teeth. If your teeth are very discolored or sensitive this may not be the product for you.

They are hard to stay on your teeth with all your saliva and I'm not sure if it's just me, but my teeth don't seem to get whiter after I use these

The best whitening strips EVER!! These fit on your teeth perfectly and do not budge. My teeth are sparkling white and people always comment!

It really help whites your teeth you see results in less than a week best thing that whites your teeth I will recommend

So effective i use them on the go all you need is 20 minutes that's it and you see the effects right away

Use these once a month or whenever I feel I need a bit of whitening. As a coffee and tea drinker. I need a whitener and this is the one I like.