Fights Bad Breath
A mixture of water and hydrogen peroxide can be an effective cure for various oral problems. Bad breath is one of those issues. The substance kills all sorts of bacteria, but it can also fight gum disease and prevent odors in the mouth.
Give Metal an Antique Look
Moving away from the body for a minute, hydrogen peroxide can work as an oxidizing agent. Therefore, you can turn copper and brass products into objects that look antique, rusty, or unique.