A thinner wears in its own way. It has two different blades doing two different jobs, and the teeth are easy to damage and hard to repair. Knowing how it wears helps you care for it, spot trouble early, and choose the right person to service it.
How a thinner cuts, and where it wears
The straight blade carries the sharp cutting edge. The toothed blade holds hair in its gaps and presses it against that edge. Hair is cut where the straight edge passes each gap.
So most of the cutting wear lands on the straight blade’s edge. The teeth wear too, at their tips and along the sides where they meet the straight blade, but more slowly. What damages teeth fastest isn’t hair. It’s knocks, drops and other metal.
Signs your thinner needs attention
- Pushing: hair slides forward along the blade instead of being cut.
- Folding: strands bend between the blades and stay uncut.
- Pulling: the client feels a tug as you close.
- Chewing: the cut ends look ragged rather than clean.
- Catching at one point: often a single damaged tooth or a nick in the straight edge.
- A changed sound or feel: grinding or grittiness through the handles.
Before you book a service, rule out the easy causes. Clean the blades, clear the teeth, and check tension. Loose tension causes folding on a sharp thinner. If the symptom stays, it’s time for a sharpener.
Don’t sharpen it yourself
Our terms are clear on this: don’t sharpen a professional edge at home. Use a sharpener experienced with the blade type. Damage from incorrect sharpening isn’t a fault, so a home attempt can cost you more than a service.
Never bend a tooth back into line yourself. A tooth that has been bent can crack.
Choosing a sharpener
We don’t offer an in-house sharpening service. Look for a professional who works on thinning and texturising scissors specifically. Ask them:
- Do you sharpen thinners regularly, including notched or V-tooth blades?
- Will you work on the straight blade only, or the teeth as well, and why?
- How do you check the result? Ask whether they test-cut after the service.
- Can you service a left-handed thinner? Not every sharpener is set up for it.
A good sharpener will tell you if a blade can’t be restored, rather than taking metal off regardless.
What a service usually involves
A typical thinner service includes:
- Inspection of both blades, the teeth and the pivot.
- Sharpening the straight blade’s edge to the correct angle for that blade.
- Attention to the teeth only where needed, such as a damaged tip.
- Cleaning and oiling the pivot.
- Setting tension and test-cutting.
Each service removes a little metal. That’s why gentle, regular attention beats waiting until the thinner is very blunt.
How often?
It depends on how much you cut, the hair you cut, and how you care for the tool. A thinner used all day on dense hair needs attention sooner than one used for occasional blending. Go by the signs above rather than the calendar.
Bench note: write the date of every service on a label inside your case. After two or three services you’ll know your own interval.
Sending a thinner for service
- Clean and dry it first.
- Close it and pack it in its case or a padded sleeve.
- Include a note with the model, the hand and the symptom.
- Ask for it back closed and cased.
Protecting the teeth between services
The teeth are the part you can’t easily replace. Protect them:
- One tool per slot. Thinner teeth shouldn’t touch cutters, clippers or combs with metal parts.
- Close it before you put it down. An open thinner on a hard bench is how teeth get knocked.
- Never catch a falling tool. Let it drop, then inspect it before its next cut.
- Cut only hair. Cutting anything else damages teeth and edges, and isn’t covered as a fault.
- Clear the teeth gently. Brush hair out; don’t drag a cloth hard across the tips.
After the service
Test the thinner before it goes back to work: look along the teeth, feel the action, set the tension, then make a few closes on a mannequin. Our guide to testing a thinner walks through the checks.
The daily routine
Sharpening is the occasional job. Daily care keeps you away from the sharpener for longer. The care and sharpening advice page has the full daily, weekly and storage routine in one place.
If you’re not sure whether a symptom is wear or a fault, read the warranty page or contact us with the model and what you’re seeing.