These crest strips work so good. I put them on and shower while they are in my mouth and remove them after. you can easily see progress. the only flaw is that it may possibly give you sensitive teeth.

Definitely work, but the product is expensive. The bottom strips tend to fall off and slide around, which can be annoying. Takes at least 5 days prior to seeing results, but if you use every day you will see them. Can leave teeth feeling sensitive

Weren't as effective as I'd hoped and really irritated my mouth. It burned as it sat on my gums and lips and it's so hard to keep them in when I keep drooling! IMHO, not worth the time or money.

Crest Whitestrips are the brand that I always keep coming back to time and time again! They are easy to use, and they always give me a pretty good result. Overall, this is worth the price and I would recommend.

Waste of money, followed directions precisely, was not satisfied, Crest promises a full refund, but it's not true. STAY AWAY, Not worth it, Will never buy another Crest product

These strips work very well but you have to be consistently using them twice a day to get great results. They don't stick to your teeth very well. I would recommend this product as it does work but it is an expensive product.

These are great for whitening teeth, the only down side is the sensitivity that comes along with it. But I guess you can assume any whitening strips cause sensitivity.

These white strips work really good in making your teeth whiter, however it left my teeth feeling EXTREMELY sensitive. It also was not very comfortable while wearing. They are a bit expensive but they do work.

Uneven stain removal which could have been my fault, but I'm confident I used them correctly. I will keep trying, but I don't think the money is worth it if I have to buy many times. I like how it doesn't burn and seems easy to use.

My teeth are usually pretty yellow- and these crest strips work pretty well after a few uses. My only thing against this product is the price- it's pretty expensive