I was very disappointed with this product. I religiously did it for the allotted amount of time and read the directions thoroughly, however, saw no results. I was about to go on vacation and wanted a nice white smile. Please don't waste your money. There are much better products out there and those will show results and won't cause teeth sensitivity.

These strips really do work! However, consistency is key. you will see noticeable results with consistent use. A con for me is that I experienced tooth sensitivity while using these strips. However, the sensitivity disappeared for me after I stopped using them.

I loved using this product because again it really works. My teeth weren't bad off but I've noticed them get brighter. In the middle of the process my mother said that stuff is working. I also got compliments from my dentist and my the hygienist. May I also add that I also use the Crest 3D White Brilliance Toothpaste and Crest 3D White Glamorous White Whitening Rinse. All because I wanted a better result.

I bought a pack of this last year and used it once a week for 4 weeks and people starting noticing my whiter brighter smile! I stopped using it for awhile because I didn't want to over whiten my teeth. People love comparing their teeth to mine. I now use one once every 3 months.

Professional effects are the way to go with the at home whitening kits. My teeth got significantly whiter than with other kits I have tried. It isn’t as much as the box says it will but worked. I usually leave on for 1 hour instead of 30 min every other day instead of every day.

I’ve used these for years and they’re the only product that is able to get my teeth truly white! The only downfall to using this product is that it caused me slight teeth sensitivity but I assumed that would happen because it’s a teeth whitening product.

This was a very good whitening system. I was able to get noticeable results in half the time. So I saved it for the next time I need to whiten my teeth. A few areas did feel sensitive while using the product, but that is to be expected. I’m very pleased with my results and would recommend this product.

My teeth would be much more yellow if I didn’t use this because I drink coffee daily as well as tea and wine. These can definitely make your teeth sensitive though so I use these only when I notice my teeth are trailing behind where I like them to be in terms of whiteness.

These are my favorite of the Crest White Strips lineup! They work fast & have a long lasting effect. I've been hooked on them for awhile & recommend them to friends and family often! Some home whitening kits can leave your gums irritated & red, but I've never had that problem with these strips.

They will make your teeth white, but they will DESTROY your enamel in the process. I would use these a couple years back so HOPEFULLY they changed the formula, but I will never take the risk again. While using it caused pain I my teeth that I tried by best to ignore, but the more I used them the more intense the pain became there was one point where I just couldn’t fight through the pain any longer, and when I had removed the pain stayed. I took a look in the mirror because the pain was so intense and I saw a faint crack that went halfway down my tooth!!! The pain remained for weeks and it finally went away when I began to use enamel strengthening toothpaste, but my enamel hasn’t been the same since. I totally regret ever using this product because I still have to be overly cautions with my teeth because my enamel isn’t as strong as before. This product will whiten your teeth, but are you willing to put your enamel in jeopardy?