They DO work, though your mileage may vary. They use the same chemical used in professional whitening by dentists. The main difference is that you don't get a custom mold and save huge $$$.
Also the strips will also say apply twice a day for 30 minutes.
Save yourself some money. Apply the strips once a day for 1 hour. It has the same effect and cuts the cost in half with and saves you time.
The 'SUPER' white strips or whatever that promise to make your teeth whiter in half the time are identical to the regular ones as far as I know, but contain more whitening agent. Which means you are more likely to experience irratation. If you can afford the extra couple weeks go with the cheaper slower ones saving yourself some money and a little irratation.
I'm told the brush-on stuff (forget what brand, but you can find it at your local drug store) is the most effective. But it's messy and I guess it burns a little for some people. It's a bottle with a nail-polish style brush and you just brush the whitening stuff on and let it sit a while, then rinse it off. The strips are probably easier though.
President treasurer secretary and sole member of the Cayman Islands Head-Fi Club.
Nov 29, 2002
I like the Crest Whitestrips too. This was a timely thread because it has been 6 months now (at least) so I've just opened a new box and off I go.
One tip: the botton strip is cut very poorly. It was either designed by someone who doesn't have many teeth or someone who loves to waste a perfectly good product. What I do is cut the strip with a pair of scissors so that I can use the extra part to cover several more teeth by sliding the precut bottom piece off to the left or right a bit and then placing the extra piece next to it.