Whitening Strips?

Does anybody know how good these work and if it's worth the price. Also how long does it take for them for you to start noticing if they actually do work and what are some cons about them? Thanks!

Answers:
Yikes, over the counter whitening strips do NOT wear away your enamel, all they do is chemically alter the color. I do agree that crest has the best over the counter that you can buy. It usually takes about 1-2 weeks before you notice a difference. They do a decent job, and are fairly cheap. Cut down on the colored foods, like ketchup, red wine, and coffee. They can stain your newly lightened teeth. And, aviod anything with acid in the morning after using the strips, like orange or tomato juice, they can cause some sensitivity. Happy Whitening!

Pro: your teeth are whiter
Con: it may wear away at the enamel of teeth.

its definitely worth! I've used it myself and I get compliments about my teeth everyday. Crest Whitestrips are the best get the original 14 day treatment. its noticeable after 3 days.
Use the Crest ones, although they cause sensitivity, your teeth turn out to be gleaming white! I only use them a week before a big day, like an interview or something.. they last a while too.
The BEST whitening remedy I've ever done was Crest White Strips - Supreme (supposedly you can only get these from your dentist) I've found them on e-bay as well. They're AWESOME!!
I've used them before. They work a little.. you aren't going to see a whole lot of difference, but your teeth will be whiter. Also.. my teeth became really, really sensitive after using them for a few days. I've been told that this is common with all of the whitening strip type products. The LED light thing.. I've heard is completely bogus. Try doing an internet search for Whitening White STrip review and see what information you can find.
I agree with all the given answers!
The Crest work well but the Rembrandt 5 day whitening work so well. I wear them overnight and in about 2 days you will be amazed at how white your teeth will become. I did have a problem with my teeth hurting while using them but a couple Advil and they were fine.
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