What Is Carbamide Peroxide?

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Carbamide peroxide is a chemical consisting of molecules of carbon, hydrogen, nitrogen and oxygen. At the foundation of the chemical is the same hydrogen peroxide you may have in your medicine cabinet to clean infections. However, the hydrogen peroxide solution is combined with urea, the source of the carbon and nitrogen, which changes it to carbamide peroxide. When carbamide peroxide mixes with water, it releases oxygen. In its purest form, carbamide peroxide appears as white crystals that dissolve easily in water.

Uses of Carbamide Peroxide

As mentioned above, most people who have heard of carbamide peroxide encountered the chemical in a dentist's office. That's because the chemical is found in teeth-whitening products, including some that are sold for in-home use. These products contain a low concentration, usually around 10 percent, of the chemical. Even lower concentrations of the chemical are used in medications that help treat mouth sores. Carbamide peroxide can reduce the presence of bacteria, which can help these sores--such as canker sores or mouth ulcers--heal faster. The chemical is often applied to the ears to loosen built-up earwax for easier removal.

How Carbamide Peroxide Bleaches Teeth

In your mouth, the chemical reacts with your saliva and releases the hydrogen peroxide. This solution is the real bleaching agent. Basically, the oxygen it contains works to break down the stains on the surface of the teeth. With repeated bleaching, the oxygen gets further into the tooth and tackles the intrinsic stains. Because the product works on surface stains first, you are able to see whitening results after the first use.

Dangers of Carbamide Peroxide

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