Colgate's optic white pen is a hassle-free way to whiten your teeth. Here's how to use. It. On your first. Application click the pen up to 20 times for the first drop to appear. On each additional.

Made with four simple ingredients:

• Alcohol (Solvent)
• Acrylates/Octylacrylamide Copolymer (Polymer film former)
• Water (Solvent)
• Hydrogen Peroxide (Whitening agent)

After less than 5 days of consecutive use, my teeth had a noticeable white shine to them in comparison to the non-whitened teeth. It works exceptionally well with stains, but it takes slightly more time with discolored teeth. With all that being said, the biggest drawback is that it is not very easy to use.

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For optimum whitening results patients should refrain from eating and drinking for 30 minutes after treatment.

The product is safe to use nightly (once per day). The recommended cycle is one week at a time, but you can use it until it is finished.

Teeth whitening pens do work, but they are not going to make drastic changes in tooth color. They are usually best for maintaining tooth color in between professional teeth whitening procedures.

Contains clinically proven technology to safely remove surface stains. Enamel-safe teeth whitening, that's good for daily use.

Also if they contain peroxide for the bleaching action that it has for whitening, it will eventually cause more erosion of the outer layer and hence sensitivity and weakening of tooth structure. Prolonged use can lead to sensitivity which is evident in your case.

Colgate Whitening Pen A: The product takes seconds to apply, and it is best if you avoid eating or drinking anything for the first hour after application to make the whitening process more effective.

For optimum whitening results patients should refrain from eating and drinking for 30 minutes after treatment. Patients should also be advised to avoid tobacco as well as any stain causing beverages such as coffee, dark colas and red wine during treatment.

For optimum whitening results patients should refrain from eating and drinking for 30 minutes after treatment.