This product is great! I use it for special occasions as touch up treatments, and it works well. It leaves your teeth visibly whiter after one treatment. I will say it can leave your mouth sensitive after use—so definitely wouldn’t use it everyday for a prolonged period of time.  But for a touch up here and there, i highly recommend this product. It’s a great price and really works.

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 used these a couple of times and I didn't had the best experience. I remember coming home from work and leaving these on overnight because I was very tired and fell asleep. The next day I couldn't even breath because my teeth were very sensitive. I was not able to talk for almost three days because of the main. This product is very strong and you must follow directions to avoid incidents like mine. The first few uses you can see immediate results which are wonderful.

I’ve used the leading up to my wedding day and my smile was beautiful and white and bright. This brand is the one my dentist office sells and recommends. It’s so convenient I can find it in stores so I don’t have to go to the dentist every time to get it!

Love love love this! It works so well but doesn’t make my teeth tender or sensitive like some other brands! It really works and removes stains super quick and it is seriously so effective! I’m loving this product so far and will definitely buy it again!

This product is absolutely the best way to whiten your teeth. I am thrilled that I can do it in the privacy of my home and see results that are fantastic. I get compliments all the time about my smile and I tell everyone about my Crest Whitestrips. So glad this is wonderful product is available.

I was very nervous at first, however, I jumped the gun and purchased the professional effects. Right now I have used 16 out of the 20 strips and I am so happy with the results. I used to have really yellow teeth and the treatment so far has lightened up my teeth at least 3 to 4 shades. It is very much noticeable to the point where I may not even need the extra 4 strips. The only side effect (as expected) is the teeth sensitivity (though no gum issues for me), which lasts about 3-4 hours post treatment and goes away after that. I rarely ever post reviews but I am very pleased with this product that I felt compelled to do so. Will definitely repurchase in the next few years.

These are the best whitening strips I've ever used. Ive used the stronger 1 hour more expensive ones and they made my teeth so sensitive and didn't even whiten as well as these. People at work even noticed and commented on how beautiful my teeth were.

Does the job but makes my teeth very sensitive after so I have to be very careful how frequently I use these. I personally don’t love how long you have to keep them on your teeth and the feel of them, but teeth whitening isn’t supposed to be an amazing experience :) but the sensitivity isn’t fun.

I use crest 3D whitestrips. Have used the crest whitening strips for many years. I had my teeth professionally whitened years back, but that fades over time. I keep them nice & white with these strips. I've tried other brands, but they are a waste of money. Crest is the best!