What can hydrogen peroxide be used for?

10 Surprisingly Awesome Uses for Hydrogen Peroxide

You’ve probably seen that familiar brown bottle in your medicine cabinet—hydrogen peroxide is great for cleaning scrapes, sure, but its talents go way beyond first aid. This simple, slightly fizzy liquid is a powerhouse around the house and garden.

Remove stubborn pit stains from your favorite shirts by soaking the underarms before washing. The peroxide breaks down the proteins in sweat residue, lifting those embarrassing yellow marks without harsh chemicals.

Want to grow mushrooms at home? It’s true—adding a bit of hydrogen peroxide to your substrate can help prevent contamination by killing off competing molds, giving your fungi a better chance to thrive.

Clean your dishwasher the natural way. Pour a cup of peroxide into the bottom of an empty dishwasher and run a hot cycle. It’ll wipe out gunk, deodorize, and leave your appliance sparkling without toxic fumes.

Looking to whiten nails, grout, or even your smile? Soak discolored fingernails in a mix of peroxide and water for a few minutes, or use it to scrub tile grout. For a quick mouthwash, dilute it with equal parts water to kill bacteria and freshen breath (but don’t swallow!).

Boost your laundry game by adding a splash to your wash cycle. It brightens whites, removes stains, and acts as a natural bleach alternative. No more dingy towels or gray-looking t-shirts.

And when mold or mildew shows up in damp corners, reach for the peroxide. Spray it on shower caulk or basement walls—it kills 99% of microbes on contact, without the harsh smell of bleach.

Revive your garden by watering with diluted hydrogen peroxide. It adds oxygen to the soil, helping roots breathe and fight off harmful bacteria. Plus, it can gently treat root rot in overwatered plants.

Hydrogen peroxide isn’t magic—but it’s the closest thing to a multitasker in a bottle. Keep one under the sink (and maybe another in the garage). You’ll use it more than you think.