Use hydrogen peroxide as a mouth rinse
Some uses for hydrogen peroxide aren’t intuitive, but they still work! Save money on mouthwash by mixing equal parts hydrogen peroxide and water and swish it around your mouth. Bonus: It’ll help naturally whiten your teeth in the process. Check out these other easy ways to whiten your teeth naturally at home.
Disinfect toothbrushes and dental appliances
Dental hygiene is one of the most effective uses for hydrogen peroxide. Though toothbrushes should be replaced every three months or after you have a cold—not doing so is one of the top tooth-brushing mistakes—you may not always have time to run to the drugstore to buy a new one. In the meantime, soak your toothbrush in hydrogen peroxide to kill the germs. It works for retainers and mouth guards, too.