Crest Classic Whitestrips Teeth White 56 Strips 14 Day

I am a dentist who recommends Crest-brand White Strips to my patients because they do work to whiten teeth. However, they have to be used correctly and I recommend that you follow the directions exactly as specified inside the box.

1. Use the strips as directed on the box. The instructions will tell you to bleach twice a day for 30-minutes a time. The inner part of the strip has a chemical called hydrogen peroxide; (in-office, or dentist-assisted dental whitening uses a 15-35% version of the same chemical) that causes the stains inside your teeth to be oxidized and turn white. Applying the strips has a small learning curve as you will probably bend or fold a couple of them before you get the technique down.

2. Leave the strips on for the time recommended in the instructions and do not overbleach your teeth, as this leads to sensitivity.

Disadvantages

1. Hydrogen Peroxide can "burn" your gums. If you notice a burning sensation...Read more

I am a dentist who recommends Crest White Strips to my patients because they do work to whiten teeth. However, they have to be used correctly and I recommend that you follow the directions exactly as specified inside the box.

1. First brush your teeth to remove the layer of plaque. Your teeth have pores and the pores need to be open for the chemical to penetrate.

2. Use the strips twice per day for maximum efectiveness as stated on the box. The inner part of the strip has a chemical called carbamide peroxide (a 10% form of hydrogen peroxide; in-office dental whitening uses a 15-30% version of the same chemical) that causes the stains inside your teeth to be oxidized and turn white. Applying the strips has a small learning curve as you will probably bend or fold a couple of them before you get the technique down.

2. Leave the strips on for 30 minutes at a time. After thirty minutes your saliva has probably diluted the peroxide to the extent...Read more

I tried Rembrandt before, and their product worked but it wasn't very good. The best product I have tried is Crest Whitestrips Classic. I haven't tried the premium but it really does work. One thing to look out for though, is how you place the strips on your teeth. If you don't press it against the cracks, you end up bleaching the front and then you have vertical lines in your mouth of unbleached yellow.