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Very effective, but hurt my gums. White teeth but too painful.

I found it hard to use and did nothing

These Advanced Crest Whitestrips are wonderful because they stay on your teeth and you don't taste the formula on the strip, like the previous ones manufactured by this brand. They work quickly and you do not fail to notice a significant difference after your first strip! If you have sensitive teeth, please keep in mind that by using the Advanced Seal, your teeth will be sensitive 2-3 days following the treatment. Use Sensodyne toothpaste after treatment, if the discomfort is too much.

Well, I learned that my teeth were sensitive using these strips. I had used Listerine strips, GoSmile, and the regular Crest Whitestrips in the past, without any issues. But these made my teeth hurt. Badly. And it lasted for a few days after the first application. If you're not sensitive in the tooth area, then these would probably work well for you...I did notice a small amount of whitening after the one-time usage.

Well I am torn about this product because I have crowded teeth on my bottom row. The strips adhere to the teeth very well- they're actually kind of hard to remove- But it doesn't whiten ALL my teeth because the strips are so stiff I can't get them to bend in between my teeth as I can with the regular crest strips. If you have perfectly straight teeth and don't like how the other Crest Strips bunch and roll up in your mouth, than this IS the product for you. How ever if you have any type of crowding in your mouth i would go with the regular strips OR get the whitening gel with mouth piece to ensure all teeth whiten the same to the same colour!

I tried this product a couple of months ago. I must admit I was looking for a blinding white smile. Now my teeth aren't yellow to begin with, but being a woman who can't start her morning without a cup of coffee I thought it couldn't hurt to add a touch of brightness to my smile.

This product is better then the old whitestrips in the fact that it bonds to your teeth so they aren't sliding all around your mouth for 30 minutes. Also I didn't experience any sensitivity to my teeth with these.

My only problem with these strips are the fact that I was expecting more whitening power. While my teeth are pretty white, i was hoping for whiter.

I've been using these for 3 days now and I can notice that my teeth are definitely brighter. I had some sensitivity the first two days but it wasn't unbearable. They definitely stick in place unlike the other crest whitestrips.