- use a very strong hydrogen peroxide solution
- leave the hydrogen peroxide in contact with your teeth for a long time (longer than one minute if swishing or two minutes if brushing as a paste)
- apply the hydrogen peroxide to your teeth too many times (more than once daily)
How do you use hydrogen peroxide to clean teeth?
There are two ways: swishing it around your mouth or mixing it with baking soda and setting it on your teeth as a paste before rinsing. Using hydrogen peroxide as a rinse: Mix equal amounts hydrogen peroxide with water, such as 1/2 cup to 1/2 cup. Swish this mixture around your mouth for about 30 seconds to 1 minute.
How to whiten teeth with hydrogen peroxide?
Consider buying a commercially available mouthwash with hydrogen peroxide. Make a hydrogen peroxide and baking soda paste. Using a paste of hydrogen peroxide and baking soda can whiten your teeth and soothe sore gums. Brush with the paste daily or use it a couple of times a week like a mask. Make sure you’re using 2–3.5% hydrogen peroxide.
How long does it take for hydrogen peroxide to work on teeth?
Buy a product with at least 3.5% hydrogen peroxide, which is the standard amount. Be aware that the more hydrogen peroxide in a product, the likely it is to make your teeth sensitive.  Brush your teeth twice a day with the toothpaste. It can take four to six weeks to notice results.
Is it safe to rinse with hydrogen peroxide?
Swish with a hydrogen peroxide mouthwash. There is some evidence that rinsing with a hydrogen peroxide and water mouthwash can be safe when used over a longer period of time. It may also whiten your teeth and help prevent stains.  Swish a mixture in your mouth daily to help whiten your teeth and ward off bacteria.
How often should you use peroxide to whiten teeth?
Whiten Teeth With Hydrogen Peroxide Using These Methods
Is using hydrogen peroxide to whiten teeth dangerous?
Therefore, they might not be worth your time or money. Hydrogen peroxide is one of the most common ingredients utilized in teeth whitening products. Nevertheless, it might not be suitable for everyone. So, is hydrogen peroxide safe for teeth whitening? On its own, hydrogen peroxide can be dangerous. It should never be used in this manner.
Can hydrogen peroxide damage gums?
Avoid doing so for as long as you experience pain. This happens because peroxide can cause significant damage to the protective enamel of teeth if used too often or in too-high concentrations. More serious side effects of hydrogen peroxide whitening include inflammation of the teeth roots in the gums.
Is rinsing with hydrogen peroxide safe?
While some people may experience gum irritation from any rinsing with peroxide, the Food and Drug Administration (FDA) has concluded that rinsing the mouth with 3 percent hydrogen peroxide solution is safe.