Posted by Kelly Harrington, MS, RDN
Hydrogen peroxide is a common household staple, usually sold as a 3% solution. It can be useful for cleaning, brightening, and freshening different areas around the home, but it should be used carefully.
Hydrogen peroxide is not recommended by many healthcare providers for routine use on cuts and scrapes because it may irritate skin and slow the normal healing process. It should also not be swallowed, used in the eyes, mixed with other cleaners, or used as a homemade mouthwash or tooth-whitening treatment unless directed by a dental professional.
Safety Notes Before You Start
- Use standard 3% household hydrogen peroxide.
- Store it in its original dark bottle with the lid tightly closed.
- Do not mix hydrogen peroxide with bleach, vinegar, ammonia, or other cleaning products.
- Spot test fabrics, grout, counters, and surfaces before using.
- Rinse food-contact surfaces well after cleaning.
- Wear gloves if you have sensitive skin.
13 Household Uses for Hydrogen Peroxide
1. Freshen Kitchen Sponges
Combine equal parts water and hydrogen peroxide in a bowl. Soak the sponge for about 10 minutes, then rinse thoroughly and allow it to dry.
2. Brighten Fingernails
After trimming and filing nails, soak fingertips in warm water for a few minutes. Then gently wipe nails with a cotton ball lightly dampened with hydrogen peroxide. Rinse hands well and follow with cuticle oil or moisturizer.
3. Refresh a White Sink
For a stained white sink, spray hydrogen peroxide over the surface and let it sit for several minutes. Scrub gently, then rinse well. Spot test first, especially on stone, colored, or delicate surfaces.
4. Clean Dingy Grout
Spray hydrogen peroxide onto grout and let it bubble for about 10 minutes. Scrub with a small brush, then rinse. Avoid using it on natural stone unless the manufacturer says it is safe.
5. Freshen the Toilet Bowl
Pour hydrogen peroxide into the toilet bowl and let it sit for 20 to 30 minutes. Scrub with a toilet brush, then flush.
6. Clean a Humidifier Reservoir
To clean an empty humidifier reservoir, unplug the machine and follow the manufacturer’s instructions first. If appropriate for your model, add diluted hydrogen peroxide to the empty tank, let it sit briefly, rinse thoroughly, and dry completely before using again.
Do not run a humidifier with hydrogen peroxide in the water tank unless the manufacturer specifically instructs you to do so.
7. Treat Underarm Stains
For light-colored clothing, combine one part castile soap with two parts hydrogen peroxide. Apply to the stain, let it sit for up to one hour, rinse in cold water, then wash as usual. Test fabric first to avoid bleaching or discoloration.
8. Brighten Light Laundry
Hydrogen peroxide can be used as a gentler alternative to chlorine bleach for some light-colored laundry. Add it to a soak or wash cycle only after checking garment care labels and testing fabric first.
9. Spot Treat Fabric Stains
For stains like blood or red wine on light-colored fabric, apply a small amount of hydrogen peroxide directly to the stain, let it bubble briefly, then rinse with cold water and wash. Always test an inconspicuous area first.
10. Clean Makeup Tools
Wash makeup brushes, tweezers, sharpeners, and sponges with warm water and gentle soap first. Then dip non-porous tools in a diluted hydrogen peroxide solution, rinse well, and dry on a clean towel.
11. Freshen Trash Cans
After emptying and washing a trash can, spray the inside with hydrogen peroxide. Let it sit for a few minutes, wipe clean, and allow it to dry before replacing the liner.
12. Wipe Refrigerator Bins and Shelves
Hydrogen peroxide can help freshen removable refrigerator bins and shelves. Remove them from the fridge, wash with soap and water, spray lightly with hydrogen peroxide, rinse well, and dry before replacing.
13. Clean Cutting Boards
After washing a cutting board with hot, soapy water, spray it with hydrogen peroxide and let it bubble for a few minutes. Rinse thoroughly and allow it to dry completely before storing.
The Bottom Line
Hydrogen peroxide can be a useful household cleaner when used carefully. Keep it away from eyes, do not swallow it, avoid mixing it with other cleaners, and always rinse food-contact surfaces well.
Adapted from Mother Earth Living Magazine, July/August 2015.
