To use, wipe your teeth with a dry towel and any remaining saliva. wet your toothbrush and dip it in some baking soda. Then brush your teeth as normal, paying special attention to the 16 visible teeth at the front. You should brush for about three minutes. Be aware that, over time, baking soda can wear down the protective enamel on your teeth. Therefore, it is not a good idea to use this treatment everyday. Stick to using it once or twice a week for whitening results without the risk of damage.

One way to use the hydrogen peroxide is to dip a clean face cloth in the liquid, then use the soaked cloth to gently rub your teeth. The hydrogen peroxide will remove stains chemically, while the cloth will help to remove them physically. Alternatively, you can rinse out your mouth with a cap full of hydrogen peroxide (which also helps to kill bacteria and freshen breath) or dip your toothbrush in the hydrogen peroxide and use it to brush your teeth.

You can also mash a strawberry and mix it with some baking soda for a natural whitening toothpaste. Other foods that help to naturally clean and whiten teeth include apples, pears, carrots and celery. [4] X Research source

If you do drink any of the above-mentioned beverages, you can prevent them from staining your teeth by drinking them through a straw, or by rubbing a light layer of Vaseline over your teeth beforehand. Alternatively, you can chew a stick of sugar-free whitening gum after eating or drinking these items. This can help to absorb any newly-formed stains, making your teeth look whiter. [6] X Trustworthy Source PubMed Central Journal archive from the U. S. National Institutes of Health Go to source

Whitening toothpastes contain abrasive particles which polish the teeth and wear away stains (without damaging tooth enamel). They also contain chemicals (such as blue covarine) which bind to the surface of the teeth, making them appear whiter. [7] X Research source To use whitening toothpaste, place a pea-sized amount on your toothbrush, and brush using small circular motions, holding the toothpaste at a 45-degree angle from the gums.

Whitening strips can be purchased over-the-counter at the drugstore or supermarket. Avoid purchasing a brand that contains the ingredient “chlorine dioxide” as this can damage the enamel on teeth. To use the strips, remove them from the package and apply one strip to your top teeth and one to your bottom teeth. Leave them on for 30 minutes. Some strips will dissolve by themselves after use, while others will need to be removed. For best results, continue to use the whitening strips twice a day over a two week period.

To use, remove the cap and twist the pen to release the gel. Stand in front of a mirror and smile widely, then use the pen to “paint” the gel onto your teeth. Keep your mouth open for about 30 seconds to allow the gel to dry. Try not to eat or drink anything for 45 minutes following the treatment. For best results, repeat this process three times a day for up to a month.

To use a whitening tray, squirt a small amount of the concentrated peroxide gel provided into the tray (which looks like a plastic retainer) and fit it over your teeth. Depending on the type of tray, you may only need to wear it for half an hour, or you may have to leave it on overnight. Although a single use will leave your teeth looking brighter, if you want significantly whiter teeth you will need to use the tray multiple times. Although custom-made trays from your dentist can be pricey (usually costing around $300), they are specially molded for your teeth, making the treatment more effective than store-bought “one size fits all” trays.

This will help to keep your teeth in tip-top condition, preventing tooth decay and gum disease in addition to making your teeth nice and white. Your dentist can also perform an in-office bleaching treatment which is like the whitening trays you use at home, except the bleaching solution is much stronger.

A bleaching gel is applied to your teeth, then a rubber shield is placed over your gums. A laser or white light is then directed towards your teeth, activating the bleaching gel. Depending on how white you want your teeth, you may need to return for several sessions. However, each session only lasts about 30 minutes. [11] X Research source