Disinfecting clippers requires two steps: first removing visible hair and debris, then applying a chemical agent that kills bacteria and fungi on the blades. Skipping either step leaves your clippers contaminated, since disinfectants can’t penetrate through a layer of built-up hair and skin oils. The whole process takes about 15 minutes and should happen after every use.
Why Dirty Clippers Are a Real Health Risk
Clippers collect more than just hair. Every pass across skin picks up bacteria, fungi, dead skin cells, and sometimes trace amounts of blood from tiny nicks. Staphylococcus bacteria on unclean blades can cause folliculitis, an infection of the hair follicles that shows up as itchy, painful bumps and pustules a day or two after a haircut. In darker skin tones, these infections often leave lasting dark spots and, in some cases, keloid scarring.
Fungal transmission is an even bigger concern. A 2024 outbreak of ringworm of the scalp (Tinea capitis) among young men in Copenhagen was traced directly to electric clippers in hair salons. Researchers sampled 133 tools from 57 salons and found the fungus on clippers in nearly 1 in 10 shops. Even cleaning brushes used to sweep loose hair off the blades tested positive 27% of the time. The fungus survives on metal and plastic surfaces between clients, making disinfection the only reliable way to break the chain.
Cleaning Comes First
Disinfectants only work on surfaces that are already free of visible debris. If you spray a chemical onto blades caked with hair, the disinfectant contacts the debris instead of the metal, and bacteria underneath survive.
Start by unplugging your clippers or switching them off. Use the small brush that came with your clipper (or an old toothbrush) to sweep hair out from between the teeth and around the blade assembly. For a deeper clean, detach the blade and scrub it gently with a drop of grease-cutting dish soap under warm running water. Pat the blade dry with a clean towel. Never soak the clipper body itself, only the detachable blade head. Water inside the motor housing will cause corrosion and electrical damage.
Disinfecting With a Liquid Solution
The most thorough method is full immersion in a liquid disinfectant. Barbicide, the blue solution common in barbershops, mixes at a ratio of 2 ounces of concentrate to 32 ounces of water. Submerge the detached blades completely and let them sit for at least 10 minutes. Prepare a fresh batch of solution daily, or sooner if it becomes cloudy or diluted with water from wet tools.
Professional regulations in most states require that any disinfectant used on salon tools be EPA-registered and effective against bacteria, viruses, and fungi. If clippers have contacted blood (even from a small nick), the standard rises to a hospital-grade disinfectant rated effective against HIV-1 and Hepatitis B. For home use, a standard Barbicide solution or equivalent meets the mark for routine disinfection.
Disinfecting With Spray
Clipper-specific sprays like Clippercide and similar products are faster and don’t require you to detach the blade. After brushing out all loose hair, hold the spray six to eight inches from the blade and coat the teeth thoroughly. The key detail most people miss: the blades need to stay visibly wet for 5 to 10 minutes for the spray to actually kill pathogens at a hospital-grade level. A quick spritz that evaporates in seconds does very little. After the contact time, wipe off any excess with a clean cloth.
Sprays are convenient for quick turnarounds between cuts, but they don’t replace a periodic deep clean with full immersion. Think of sprays as your between-use step and liquid immersion as your weekly reset.
Disinfecting With Rubbing Alcohol
If you don’t have a dedicated clipper disinfectant, 70% isopropyl alcohol is an effective household alternative. Pour a small amount into a shallow dish. With the clipper running, dip just the blade tips into the alcohol for a few seconds. The vibration helps the liquid work between the teeth and dislodge fine debris at the same time.
Use 70% concentration rather than 91%. This seems counterintuitive, but the higher water content in 70% alcohol slows evaporation, giving it more contact time with the blade surface. That extended contact is what actually kills bacteria and fungi. The 91% version evaporates so fast it may not stay wet long enough to do the job. Let the blades air dry completely before the next step.
Oil the Blades After Every Disinfection
Alcohol and disinfectant solutions strip the protective oil film from metal blades. If you skip re-oiling, the exposed metal begins to oxidize within hours, especially in humid bathrooms. Rusted blades dull quickly, cut unevenly, and can snag or tear skin instead of cutting cleanly.
Once your blades are fully dry, place a single drop of clipper oil at each corner of the blade and one drop across the center of the teeth. Turn the clipper on for 10 to 15 seconds to distribute the oil evenly across the cutting surfaces. Wipe away any excess with a cloth. Standard clipper oil is a light mineral oil. Don’t substitute cooking oils or WD-40, which can gum up the mechanism or irritate skin.
How Often to Disinfect
If you’re cutting hair professionally, disinfection is required between every single client. That’s not just best practice; it’s the legal standard in virtually every state’s cosmetology regulations. All tools and implements must be cleaned with soap and water and then fully immersed in an EPA-registered disinfectant mixed according to the manufacturer’s directions after each service.
At home, the stakes are lower if you’re only cutting your own hair. A brush-out and spray after each use, combined with a full deep clean and immersion every two to four weeks, keeps your blades hygienic and in good shape. If multiple family members share one set of clippers, treat it like a professional setting and disinfect between each person. Sharing clippers without disinfecting is functionally no different from sharing a razor.
Quick Reference: The Full Process
- Brush out debris with the clipper brush or an old toothbrush after every use.
- Wash the blade with dish soap and warm water for deeper cleaning. Dry thoroughly.
- Disinfect by immersing in Barbicide (2 oz per 32 oz water) for 10 minutes, spraying with a clipper disinfectant and waiting 5 to 10 minutes, or dipping running blades in 70% isopropyl alcohol.
- Dry completely before oiling. Trapped moisture under oil accelerates rust.
- Oil the blade with one drop at each corner and one across the teeth. Run for 15 seconds and wipe excess.
- Store in a dry location with a blade guard on.
The entire routine adds roughly 15 minutes to your cleanup. Skipping it saves time once but costs you in dull blades, skin infections, and clippers that wear out years before they should.