Easy to apply and use! I always leave them on a little longer than the suggested 20 minutes to maximize the effects. After using the strips just 3 times you will notice a difference (if you don't space them out too much). I've used this product many times and keep going back to them.

Loooove these whitening strips!! Toothpaste and brushing your teeth can obviously make your teeth white, but sometimes perfect hygiene doesn't even completely do the trick. So then comes crest whitening strips to save the day! I've heard people say they're teeth hurt when they leave them in for too long. I've never experienced this problem, but make sure to follow the directions carefully to avoid any pain! Overall, I recommend.

These definitely work to whiten your teeth in an easy at home way. They are definitely expensive but I think that is par for the course with all whitening strips. You cannot wear these for too terribly long though if you have sensitive teeth. After about 15 minutes my teeth begin to feel like they have lightning shooting through them. Once I remove the strips the pain subsides.

I like these white strips. I use them about twice a week and there is a noticeable difference. The only negative thing I can say is tooth sensitivity, which is why I only use them twice a week instead of daily. Though, with every whitener you'll have tooth sensitivity.

I used these whitestrips and I was very surprised to see that you are able to see a change right away. At first they can feel very uncomfortable but then you get used to them. I do believe that they are expensive for you to repurchase over and over again. Overall, I was satisfied because you were able to see the difference in your teeth. 

Whoo boy. This hurts my teeth from the second I put it on to at least five days after I take it off. Slimy, slides off of teeth, bottom not big enough to cover front and back, and the taste is real bad. I couldn't try this long enough to see results as I care about the health of my teeth

This is a really great product that I found to be worth what it costs. It whitened my teeth many shades even though I did not use it daily (I used it more like every few days for a month or so, then kind of “as needed”) and it really grips onto teeth - you can even drink water with them on. As always, you do need to read directions carefully. They occasionally cause some sensitivity for up to a day after but it's not a problem as long as it's expected. Note that the Crest website often has amazing two-for-one deals on these kits!!! Even more worth it!

These definitely work! After a few uses, they do lighten your teeth a few shades. However, the taste and slimy feeling in your mouth while using them, combined with the sensitivity it lends you, as well as the price, really puts me off. I've been using Zimba whitening strips with no issue (they stick, are coconut based and they're cheap).

The BEST!!!! By far the best whitening product on the market right now! Super fast and affective for pearly white teeth! Helps with stains and doesn't require a lot of work or time. Lasting effect after just a few uses! Love these! They tend to be more on the expensive side but in my option are totally worth it! Definitely worth investing in!

These whitening strips are so amazing. They helped boost my confidence tremendously. After just one use I was already seeing changes. They can be harsh on the enamel of the teeth so I try to spread out my usage. They don't taste too chemically either!