These definitely get the job done and keep your teeth looking white. My only issue is that I have calcium deposits in some of my teeth and this enhanced those which didn't look great. The taste is also not ideal but that's with any teeth whitener I think.

Although it states it will not work on porcelain crowns it actually did on mine! One of my front teeth is a porcelain crown and I got it before I became a heavy smoker and cola drinker. It yellowed along with the other teeth but somehow the strips brightened it back to its original color. I have had no gum irritation or tooth sensitivity so far. The strips are easy to use, come off easily and leave no residue. I saw results immediately and am now on my fourth day and the results continue to astound me. Great product!

The whitening strips are the best thing ever. They don't taste very good though so I put my retainer over it and it does the trick. I put them on while I'm doing my makeup and by the time I'm done my teeth are instantly whiter. Just make sure to brush your teeth before and after.

Crest 3D whitening strips are easy to use and works really well. After about a weeks worth, you could start to see the difference. Although it did not give me sensitivity, some of my friends did get some sensitivity, so be aware of the pros and cons of it. Overall very good produce and would recommend it!

Do you recall the old cartoons sound affect that accompanied a great big smile? Whether the smile was used to cover up a sneaky behavior or to show great pride....CHING!!! accompanied a great big and brilliantly white smile. Well, that is what 3D White Whitestrips Professional Effects has caused to replay in mind every time I confidently flash an ear to ear smile. Many people have commented on my white teeth. My son got his braces off and was a bit surprised at some of the staining.....but only until he used the strips. Then....BAM.......BANG.........BOOM.......CHING!!!!!!!! He restored his smile too!

If you know how to use this product already, you are good to go. But as others have noted you are NOT getting the box pictured. You get a plain box with loose "strips" and literally no instructions. If you go on line to find instructions, Crest has MANY instructions for their white strips and they differ. So just as long as you know that the pictured strips are ones you have used before so know the instructions you are good to go. Otherwise you will have no clue at all as to the correct use of these strips and CREST on line is of no help at all.

These are great for at home whitening, you pop them on and go about your day for 30-60 minutes. Just be careful you dont place them on your gums because sometimes in burns or whitens them a little but that goes away in a few minutes after you take them off

I am a fanatic about my teeth, and this product does exactly what I want! I have a whiter/brighter smile! I use the crest 3D professional white strips (whole box) twice a year! Some sensitivity at first, but doesn't last. I think everyone should give this product a try, it is well worth it and the money!

For all the coffee drinkers out there, the single struggle of coffee stained teeth is too real. If you're any thing like me, you may have skipped on few cups of coffee for the sack of trying to avoid coffee stained teeth. I was literally tired of skipping out on my caffeine and decided to rejuvenate my teeth with Crest 3D White Whitestrips. Now every morning I can be alert, on my toes and have the beautiful smile to carry me through my day. Thanks Crest 3D white Whitestrips !!!

The only think I can say that isn't the best about this is the tooth sensitivity. Otherwise it's wonderful. My teeth are super white and I get compliments all the time! The sensitivity does wear off after a day or so, but the whiteness lasts for weeks!