While many dentists offer professional teeth whitening services, it is often cheaper to whiten teeth at home, so do-it-yourself teeth whitening kits continue to be popular. In fact, the most widely used home remedy for restoring stained or discolored teeth is whitening strips. You don’t need a prescription from your dentist or local pharmacy to get these strips, and they can be easily applied at home to restore your teeth to their original color and shine.

Read on to learn how teeth whitening strips work.

How do teeth whitening strips work?

Tooth whitening strips contain peroxide or bleaching agents. As a result, they can whiten your teeth, just like bleach can whiten your clothes or hair. Peroxides bleach the color of your teeth to restore their natural white color.

Teeth Whitening Strips Kit

Teeth Whitening Strips Kit

Most whitening strips are made of polyethylene, which is thin, flexible plastic. The plastic is coated with peroxide, and some types of strips contain more than others. You can apply the strips to your teeth according to the package instructions so that the peroxide will come into contact with the tooth enamel. This allows the peroxide to remove stains and discoloration from the tooth surface.

The peroxide in the whitening strips penetrates the outer layer of the tooth, called the enamel, and goes deeper into the dentin layer where they bleach the chromogen. Chromogen is a pigment molecule inside and outside the tooth that causes staining.

Staining can be divided into two categories: extrinsic staining and intrinsic staining.

Exogenous staining

Exogenous staining affects the exterior of the tooth and is mainly caused by environmental factors, such as


Certain foods and beverages, such as coffee, wine, dark berries


Exposure to metals such as iron or copper

Teeth Whitening Strips Kit

Teeth Whitening Strips Kit

Inherent staining

Intrinsic staining can affect the inside of the teeth. It is caused by

Age-related enamel erosion



Exposure to high levels of fluoride

Impaired tooth development

Whitening strips target both extrinsic and intrinsic stains

Whitening strips can target both types of stains. Stains caused by aging, genetics, smoking, or coffee are usually the most responsive to bleaching. Yellowish aging stains also respond well.

Whitening strips are best used when you are trying to make minor corrections to the color of your teeth.

How long do teeth whitening strips take to work?

There are many types of whitening strips on the market, with varying instructions from brand to brand. Most teeth whitening strips kits come with 2 sets of strips. One set is for the upper teeth and the other for the lower teeth. The teeth whitening strips kits also come with instructions on how long to leave the strips on your teeth.

Typically, you use whitening strips twice a day for 2 weeks. You usually leave them on for about 30 minutes at a time. Teeth brightening can be seen in as little as a few days from a trusted source and can brighten your teeth by a shade or two. Some products may only require you to apply them once a day but can provide the same results.

If you want to get more information about the teeth whitening strips kit, welcome to contact us today or request a quote.