Sterilizing hair clippers involves removing debris, disinfecting the blades with alcohol or an EPA-registered disinfectant, and oiling afterward to prevent rust. The whole process takes under 15 minutes and should happen every time you use your clippers, whether you’re cutting your own hair or someone else’s.
Skipping this step isn’t just about keeping things tidy. Clipper blades can harbor bacteria like Staphylococcus aureus (including drug-resistant MRSA), fungal species that cause ringworm and scalp infections, and even lice. These pathogens survive on metal surfaces between uses, and any nick or scratch during a haircut gives them a direct route into the skin.
What Lives on Dirty Clippers
A review published in the European Journal of Microbiology & Immunology found that barber equipment harbors a surprisingly wide range of pathogens. Researchers identified Staphylococcus aureus, several species of Trichophyton (the fungus behind ringworm), Candida yeast, and drug-resistant MRSA on clipper blades and other tools. Fungal scalp and beard infections in young men have been rising, and contaminated barbershop equipment is a major contributor.
Blood-borne pathogens like hepatitis B and HIV are also a theoretical risk when clippers break the skin. This is more relevant in professional settings with multiple clients, but even at home, sharing unsterilized clippers between family members can spread staph infections and fungal conditions from person to person.
Step-by-Step Disinfection Process
Professional barber boards require a specific sequence: clean first, then disinfect. Jumping straight to a disinfectant spray without removing hair and debris reduces its effectiveness, because organic matter shields bacteria from the chemicals. Here’s the full process.
1. Remove All Debris
Use the small cleaning brush that came with your clippers (or any stiff-bristled brush) to sweep out all hair from between the blade teeth. If your blades detach, pop them off and brush both sides. Tap the clipper body gently to shake out anything trapped inside. This step matters more than it seems, since built-up hair creates a barrier that prevents disinfectants from reaching the blade surface.
2. Wash With Soap and Water
For detachable blades, rinse them under warm water with a small amount of dish soap. Scrub with your brush to remove any oil residue or skin cells. Dry thoroughly with a clean paper towel before moving to the next step. Moisture left on the blades will dilute your disinfectant and eventually cause rust.
If your blades don’t detach, skip the running water. Instead, wipe the blade surface with a damp, soapy cloth, then dry immediately. Never submerge the clipper body or any electrical components in liquid.
3. Disinfect the Blades
You have a few options here, and any of them will work for home use:
- Isopropyl alcohol (70% or higher): Pour enough into a shallow dish to cover the blade teeth. Submerge detachable blades for 10 to 30 seconds. Interestingly, 70% alcohol is slightly more effective than 91% because it evaporates more slowly, giving it more contact time with bacteria. The 91% version works fine if you need faster drying.
- Barbicide concentrate: Mix according to the label and fully immerse blades for 10 minutes. This is the same product professional barbershops use, and it’s effective against bacteria, fungi, and viruses. Barbicide wipes require only 2 minutes of contact time and work well for quick cleanups between uses.
- Clipper disinfectant spray: Products like Andis Cool Care Plus and Clippercide are EPA-registered, hospital-grade disinfectants designed specifically for clipper blades. Spray directly onto the blade surface and let it sit for the contact time listed on the label. These sprays are convenient because they also cool and lubricate the blades in a single step.
California’s Board of Barbering and Cosmetology requires that any disinfectant used on professional tools be EPA-registered with proven bactericidal, fungicidal, and virucidal activity. For home use, you don’t face inspections, but choosing an EPA-registered product ensures you’re actually killing the pathogens that matter.
4. Oil the Blades
Alcohol and disinfectants strip the lubrication from clipper blades, and dry metal-on-metal contact causes friction, heat, and eventually rust. Oiling after every disinfection is not optional. Place one drop of clipper oil on the left side of the blade, one on the right, and one in the center. Turn the clipper on for 5 to 10 seconds so the oil distributes evenly between the cutting surfaces, then wipe away any excess with a clean cloth.
Standard clipper oil is inexpensive and lasts a long time. Don’t substitute cooking oil or WD-40, as cooking oil goes rancid, and WD-40 isn’t designed for skin contact.
How to Clean Plastic Guards and Attachments
Plastic clipper guards collect hair, skin cells, and oils just like the blades do. Wash them in warm soapy water, scrubbing with a brush to clean inside the teeth. Rinse and dry completely. Then soak them in your disinfectant solution (Barbicide or similar) for the full recommended contact time. Unlike the clipper body, plastic guards have no electrical components, so full immersion is safe.
If you share guards between people, disinfect them between every use. Fungal spores from ringworm are particularly stubborn and can survive on plastic surfaces for weeks.
Do UV Sanitizers Work for Clippers?
UV-C light boxes marketed for tool sterilization have become popular, but they come with significant limitations. UV-C light only disinfects surfaces it can directly reach. Clipper blades have grooves, crevices, and undersurfaces where pathogens hide, and UV light can’t penetrate those areas. Organic matter like hair or oil residue also blocks the UV rays from reaching the surface underneath.
A review of UV-C disinfection research noted that effectiveness depends heavily on exposure time, distance from the light source, and the absence of organic matter on the surface. For flat, pre-cleaned surfaces, UV-C can reduce bacterial loads meaningfully. For something as geometrically complex as a clipper blade, it’s not reliable as a standalone method. If you own a UV box, treat it as a supplement to chemical disinfection rather than a replacement.
How Often to Disinfect
If you only use your clippers on yourself, a full disinfection after each use keeps the blades in good condition and prevents bacterial buildup. At minimum, brush out hair debris after every cut and do a complete clean-and-disinfect cycle at least once a week with regular use.
If you cut hair for multiple people, even just family members, disinfect between every person. This is the standard professional barbers follow, and it’s the only way to prevent cross-contamination of staph bacteria and fungal spores. The process adds only a few minutes, and it’s the single most effective thing you can do to prevent clipper-related skin infections.