I feel like they begin to work but they always leave you wanting more. I started using these around 2007 and while they have improved the strip you still must use them everyday.

I did notice a difference in my teeth after using this product. The strips itself I think have a weird taste to them but it’s worth it for the results !

i'm not all the way through this set of whitening strips and i can see a difference, but they make my teeth really sensitive. i notice that after using them, my teeth are extra sensitive to cold temperatures in particular, but they definitely work.

Seeing many ads about this product I decided to buy it, definitely if you follow the steps and comply every day and put them on, if you will see a great color change in your teeth. Recommended!! (JUST PUT THEM 30minutes a day)

These whitening strips get the job done and they are so easy to use. They do make my teeth sensitive but that’s something that comes with whitening your teeth. I don’t love the residue left on my teeth after I remove the strips.

These white strips really do work, but they make my teeth extremely sensitive. I can usually only wear them once or twice a week and they typically recommend wearing them every day. I wish they would come out with a version for sensitive teeth!

Great product! Make sure to use this product as instructed or else it could cause some sensitivity in your gums. Overall I definitely saw a difference in the color of my teeth.

They work great! After only one use my teeth are noticeably whiter. It does however hurt my husbands teeth, so if you have sensitive teeth it might not be for you.

I started using these strips 10-15 minutes a day for a week and within 3 days there was a huge noticeable difference. After that week I only use one strip a month for 25 mins to keep my smile white. This product works fast and is very effective.

I love my smile! My teeth have never looked as good as the do! They feel weightless and you can barely see the strip when you put them on! I love this so much!