This product is pretty expensive , I find it doesnt do anything . I would just pay to get a professional to do it unless you get these on sail and hope that they work for you

I do not recommend using these. For as expensive as they are I found they had mediocre results and they are extremely bad for your teeth. Within a few days of using them I couldn't even eat or drink anything cold and my teeth were in pain.

I had really high hopes for this product. I havery recently started going to the dentist after years of not going so before having them whiten my teeth I need some other work done. I have drink tea everyday so I have stained teeth due to that. I have tried numerous different toothpastes claiming to help whiten teeth and tried these as a last resort. I have used more than two boxes in a row everyday and I haven't seen any improvement. I never know which side of the strip to touch so I always end up with the slimy goop on my fingers and if that's not bad enough having to wait with the strips in your mouth makes me salivate and the strips just fall off my teeth in a mess. I would not recommend this to anyone.

To be honest, I was very disappointed with the results from the Crest Whitestrips...I found them to be inconvenient and time consuming, I prefer to use the whitening toothpaste in between my dental visits

I purchased this product liking the idea of whitening at home. They were a pain to apply and would not stay on my teeth. They also made my teeth extremely sensitive after using.

I found using the Crest Whitestrips to be inconvenient and an absolute nuisance. The strips are hard to keep on your teeth and you start drooling because it feels awkward to swallow. It's also difficult to speak properly with the strips on. After applying the strips for the prescribed duration, I saw absolutely no color difference nor improvement. It was a total waste of money and time.

Teeth got a bit whiter. Extreme itchiness. Gross bleach taste. Will never do it again!

I tried the 2hr strips and never again, my teeth ached all night. I had to take Advil the next day and was so sensitive I didn't want to open my mouth. I've used the other intervals with comfortable success but I'll be stealing clear of these 2hr ones

I tried the crest white strips and really have nothing good to say about them. They hurt my teeth after wearing them and I saw no difference in the colouring of my teeth. I did fallow the directions and only kept them on for the recommended time frame.

Got a free sample of Crest Whitestrips and finally tried them this evening. I couldn't stand the way it felt on my bottom teeth and took that one off after half an hour. I've had the top one on for an hour and a half and can't wait to take it off in half an hour. Do people really wear these for two hours a day? I find the peroxide is making my tongue a little numb. I definitely won't be buying these. Have my doubts over their effectiveness in any case. Thankfully I have fairly white teeth naturally, and see a dentist every six months for a good cleaning.