These whitening strips work right away. No sensitivity so far. Very comfortable to wear. It's not a permanent solution. You still need to continue to brush and floss your teeth in order to maintain clean and healthy teeth.

I've been using these strips for years! Everyone always compliments my teeth and it works better than others that I've tried! Definitely worth the price!

The white strips caughted sensitivity to my teeth. The price is expensive and I was not satisfied with how they worked. This was a first time for me using them. I would not buy again.

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

With whitening effects from the Professional system, I have much more confidence. I receive compliments on my smile every day. So easy to use and comfortable.

Love these. They work really well even if you don't wear them every day. The white color also lasts for a really long time once you finish the treatments. Good price as well.

these whitening strips are good! they have left white marks on my gums for a few hours after i used them but other than that no issues, makes your teeth super white!!

I liked it, it was a little strong on my gums, but got the job done. I am a Dental Hygienist, and I prefer the crest to in office whitening. I think it's gentler and just as effective

As an avid coffee drinker, whitening my teeth is necessary to keep the coffee stains away. These strips work wonders and I love how easy they are to use! I use it an hour a day for three weeks and can tell a noticeable difference.

This product is effective. It works as advertised. Prior to the product, i had no experience with whitening my teeth. Literally after one use, my teeth were 10x whiter. This is a really good product to try and even use!