Most people know hydrogen peroxide as a simple wound cleaner. But this versatile liquid has far more to offer.

From personal hygiene to household cleaning, diluted 3% food-grade hydrogen peroxide (HP) can be used in dozens of ways. Stronger concentrations should never be used on the body, but with the right dilution, its benefits are wide-ranging.

Everyday Health and First Aid

Fight Viruses
Pour a capful of HP into one ear, let it sit for 5–10 minutes, then drain and repeat on the other side. This simple step is said to help prevent colds and flu.

Tooth and Mouth Care
Gargling a mix of HP and water can whiten teeth, freshen breath, and even ease toothaches when combined with coconut oil. It’s also effective as a gentle mouth rinse, though it should never be swallowed.

Wound Cleaning
Applied directly to minor cuts and scratches, HP helps prevent infection and speeds healing. It can also be used during regular bandage changes.

Sinus Relief
A capful of HP mixed with water can be used as a rinse to clear blocked sinuses.

Skin Treatments
Hydrogen peroxide works as a simple cleanser for acne-prone areas, can soften calluses and corns when used in a soak, and may even help shrink boils when added to bath water.

Ear Care
A few drops of HP can loosen earwax, prevent swimmer’s ear when mixed with vinegar, or support recovery from ear infections—though it should never be used with a punctured eardrum.

Beauty and Grooming

Whiter Nails
A paste of HP and baking soda removes yellow stains from fingernails.