All You Need to Know About Teeth Whitening Gel

Teeth Whitening Gels – And What You Should Know!

Most of the products for home teeth whitening that are available on the market today contain a kind of whitening gel which is the active bleaching agent that can restore the natural whiteness of the teeth.

Teeth Whitening Gel

Teeth Whitening Gel

A gel whitener has proved to be far more effective than any liquid substances because of its viscosity that helps it remain on the teeth for the required length of time without running off.

Also, dentists prefer the use of bleaching substances in the form of a gel for in-surgery whitening.

The two most frequently-used whitening substances are hydrogen peroxide and carbamide peroxide.

When the first home whitening kit was created in 1989 it included a pair of mouth guards that could hold a liquid form of the bleaching agent.

Later, the liquid whitener was replaced by gel which was more convenient to use in the mouth guards.

Today, some quality whitening kits further improve the whitening results of the gel with the use of a handheld laser-light device which is included in the kit.

Hydrogen Peroxide

Hydrogen peroxide can be found in several everyday products, such as cosmetics, personal hygiene products, even in several detergents we use at home. Because of its oxidising properties, hydrogen peroxide is also used as an antiseptic for injuries and cuts.

Hydrogen peroxide is stronger than carbamide peroxide and that is why teeth whitening kits that use hydrogen peroxide have a concentration of about 6%. 

Dentists also use hydrogen peroxide for severely stained teeth or for faster whitening results. High concentration of hydrogen peroxide can rarely be found in home teeth-whitening kits as it can cause sensitivity.

Carbamide Peroxide

Most teeth whitening kits for home use contain carbamide peroxide at a concentration that does not exceed 18%. Even dentists show a preference for carbamide peroxide because it is milder on the teeth and can provide a more natural whitening effect.  

Kits containing carbamide gels have been extensively used by people all over the world with excellent whitening results. Recently the EU has sought to restrict their use on the grounds that peroxide can be potentially detrimental to the enamel of the teeth.

However, dentists confirm both the safety and effectiveness of carbamide gels which are still used in the United States. When home teeth-whitening kits are used according to instructions, there is no irritation to the gums and no sensitivity to the teeth.

People who have sensitive teeth and gums are advised to use a product of lower concentration of carbamide peroxide and avoid leaving the whitening gel on the teeth for longer than the manufacturer’s recommendation.

For use across the EU, several manufacturers have created non-peroxide kits that are based mainly on Sodium Bicarbonate. These non-peroxide kits can offer satisfactory results for teeth that are mildly discoloured.


Carbamide peroxide kits are ideal for home use. The concentration of the gel is low so as not to cause irritation, and even though the desired results may take a few more whitening sessions, most users are satisfied with the whitening effects such kits offer.

Read our reviews for more information on different whitening products. We always try to include all the necessary facts that can help you make the right decision and get the beautiful, pearly white smile of your dreams!

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