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Hydrogen Peroxide for Teeth Whitening

Hydrogen peroxide

The FDA has approved ordinary three percent hydrogen peroxide for use as a mouthwash, but European authorities will only approve one percent hydrogen peroxide for this purpose. Hydrogen peroxide will work to whiten teeth, but it works slowly, tastes terrible and dissolves enamel.

Hydrogen peroxide as a tooth whitener


  • Use hydrogen peroxide as a mouthwash, rinsing with it for about 30 seconds.
  • Spit hydrogen peroxide out into the sink, and rinse thoroughly.

Why It Works

Hydrogen peroxide is a bleach. Almost all tooth whitening products contain it. Dentists use a much higher concentration of hydrogen peroxide (25-35 percent) in the office for bleaching teeth. Hydrogen peroxide works by degrading the molecules out of which the stain originally formed.


Hydrogen peroxide is safe for topical use, but should not be used internally. Using hydrogen peroxide in the mouth is believed to be safe, if you are careful to rinse it out thoroughly. However, if you have any small wounds in the mouth, such as bleeding gums or canker sores, hydrogen peroxide will sting. It can cause gum sensitivity, and using it over a long period of time can cause the enamel of the teeth to erode. Because of the possibility that some small amount might accidentally be ingested, pregnant and breastfeeding women should not use hydrogen peroxide orally. Always consult a dentist before putting anything into your mouth.

More Remedies


This information is solely for informational and educational purposes only. The publication of this information does not constitute the practice of medicine, and this information does not replace the advice of your physician or other health care provider. Neither the owners or employees of or the author(s) of site content take responsibility for any possible consequences from any treatment, procedure, exercise, dietary modification, action or application of medication which results from reading this site. Be aware that many of the techniques and remedies published on this site have not been evaluated in scientific studies. Often, only limited information is available about their safety and effectiveness. Use of these remedies in connection with other medications can cause severe adverse reactions. It is always best to speak with your primary health care provider before engaging in any form of self treatment. Additional information contained in our Legal Statement

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