These strips work well. Unfortunately--and therefore the three star rating--the box I bought contained two dried and unusable strips. That's twice this has happened. Hey, Crest, work on your quality control. Then you'll get your fourth and fifth stars.

I always buy this whitening strips especially when i have big events coming up or photographs. The only downside is for a few days after your teeth may become sensitive, but I do think they do a good job and are a quick fix to whiten your teeth without getting it professionally done.

I love all crest products but honestly this one is deep inside my heart I started using this at 14 years old when I wanted my teeth a little more white, it's been 5 years and I still use it until this day. It works wonders and after two treatments you will already see the results and you really won't even believe it because I know I didn't. Really a great great product.

I remember using Crest Whitestrips back when they first came out. Completely satisfied. This time around not so much, which was a disappointment since I expected similar results. After the first box did not work, I decided to go ahead with getting a second box through Crest, as recommended. I used the product 30 minutes once a day, and did not use immediately after brushing, as recommended. It did make some difference, but my teeth still have a yellow tint.

Like many of the other reviews stated, mine came in a plain brown cardboard box with NO INSTRUCTIONS. I've used Crest Whitestrips before and the individual packaging of the strips looks legit. After checking the Crest website, they show the same brown box container so I'm gonna try them and see.

I have been doing these kits 1 a year or so since college and I love them! They have always worked great how ever they have upgraded the strips so they don't come off so easy. They used to kind of slide down in the 30 minutes you had to keep them on, nice improvements Crest!

These make my teeth super white!! I used them for 30 minutes each day until I ran out and I really like it!! The only thing I don't like is that it makes my teeth a little sensitive for a few minutes after I take the strips off but that does not last long. I would buy again!

This product does what it says it will do. Whitens my teeth and doesnt leave them feeling overly sensitive. I usually whiten once every six months to keep up with the color. If you want a cheaper alternative, go with target's up and up brand. Works just as well for a cheaper price tag.

Absolutely love this product and the results that I have seen from this product. My teeth have become so much whiter since starting to use this about 4 years ago. I whiten my teeth about once a month and have done it for about 3-4 years and it has stayed consistently white over all this time. The only complaint I have is when the strips go on the teeth, it is extremely difficult for them to stand in place as nothing is holding them there. Personally, I put my retainer in on top to hold them down so I can get the most out of my strips, but others may not be able to. They seem a little bit more pricy but I am willing to pay for something that works for me.

I absolutely love crest whitestrips. I tend to use them more often leading up to a special event. I used them frequently leading up to my wedding and my teeth were pearly white for my bridal portraits! I also have sensitive teeth and these strips don't irritate me or cause more sensitivity.