1. Try Oil Pulling
Coconut oil pulling involves swishing oil in your mouth for 15–20 minutes to remove bacteria. Practicing this daily can reduce plaque and may brighten your teeth.
To oil pull, put 1 tablespoon of coconut oil in your mouth and push and pull the oil through your teeth. Coconut oil is solid at room temperature, so you may need to wait a few seconds for it to melt. Continue the oil pulling for a full 15–20 minutes.
Be sure to spit the coconut oil into a toilet or trash can, as it could return to solid form once in your drain pipes and cause a clog.
2. Brush With Baking Soda
Science has not yet proven that brushing with plain baking soda will whiten your teeth, but several studies show that toothpaste with baking soda has a significant whitening effect.
To use this remedy, mix 1 teaspoon of baking soda with 2 teaspoons of water and brush your teeth with the paste. You can do this a few times per week.
Brushing with a paste made with baking soda and water can reduce bacteria in your mouth and buff away surface stains.
3. Use Hydrogen Peroxide
One way to use hydrogen peroxide is as a mouthwash before you brush your teeth. Make sure you are using a 1.5% or 3% solution to avoid side effects.
Another way to use hydrogen peroxide is by mixing it with baking soda to make a toothpaste. Combine 2 teaspoons of hydrogen peroxide with 1 teaspoon of baking soda and gently brush your teeth with the mixture.
Limit the use of this homemade paste to a few times per week, as overuse can erode your tooth enamel.
4. Use Apple Cider Vinegar
To use it as a mouthwash, dilute it with water and swish it around in your mouth for several minutes. Make sure to rinse your mouth with plain water afterwards.
Apple cider vinegar has antibacterial properties that may help whiten your teeth. However, overuse of vinegar can also erode the enamel on your teeth, so limit its use to a few times per week.
5. Use Fruits and Vegetables
In particular, strawberries and pineapple are two fruits that have been claimed to help whiten your teeth. To use this remedy, smash up a fresh strawberry, combine it with baking soda and brush the mixture on your teeth.
Regularly consume raw fruits and vegetables to help rub off plaque and keep your teeth looking bright.
6. Prevent Tooth Stains Before They Happen
A healthy diet with enough calcium can help prevent your teeth from becoming yellow. Brushing your teeth soon after you eat can also help prevent stains.