Fights Bad Breath
A diluted mixture of mostly water with a bit of hydrogen peroxide can be used as an effective mouth rinse in order to help fight bad breath. It can help kill stinky smell causing bacteria and help avoid gum disease.
Providing an Antique Look to Metal
Hydrogen peroxide can be used as an oxidizing agent in order to change the look of different types of metal. For those who want to give some furniture or anything else a more antique feel, it can make brass and copper look artisticly rusted.