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 don't use them every day, don't need to with how effective they are. Use a set every couple weeks just for a refresher, and it makes a noticeable difference. Although expensive, it's definitely a must have for every teeth routine!

While it is expensive. These strips are totally worth it. U can see the difference in a few days. While it leaves your teeth feeling a little tingly initially it stops after a few days and you are left with sparkling white teeth

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

Love love loveeee my crest whitestrips. I got them on sale at shoppers drug mart and fell in love! My teeth are way whiter than they were before. I will continue to buy them full price.

I drink a lot of coffee and these helps restore a pretty white to my teeth. Whenever I notice my teeth are looking funny, I grab a box. They do hurt my teeth a bit, but it's worth it to me.

I use these strips since 3 years and I get so many compliments on how white my teeths are! You can find them in pharmaprix or jean coutu pharmacies they are often on sale !!!!

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.

The crest whitestrips drastically improved the colour of my teeth after only a few days of use. I have tried otger brands before for only a few dollars cheaper and they dont work as well. The crest whitestrips are a great price and work amazing.