When I visit barbershops and beauty salons these days, a common question I get asked is, "How often should scissors be sharpened?"

The sharpening cycle for barbershops differs, but for cutting shears, it's every three months, and for thinning shears, it's every five to six months.
For beauty salons, it's five to six months for cutting shears and about ten months to a year for thinning shears. The durability of the sharpness varies depending on the type and number of shears.
This cycle likely applies to the shears that are used most frequently. Recently, I've been asked to inspect and sharpen shears. During this process, I often find issues like loose screws or excessive burrs, which indicate a lack of regular maintenance. Proper maintenance can extend the life of the shears.
Please consult us if you have any questions about shear maintenance.
Regarding the sharpening of thinning shears, especially when talking to beauty salons, I often hear that customers frequently request not to use them. When asked why, they say that their hair gets severely damaged, becomes difficult to manage, and combs easily get snagged. As a result, I hear that many salons are shying away from thinning shears. It seems many beauty salons do not sharpen their shears when I visit.
Ultimately, shears also require regular maintenance.
For inquiries and requests regarding sharpening, please click here:

I once visited a beauty salon where the distributor reportedly told them not to sharpen their shears. While shears may not wear out, hair will definitely get damaged, so regular maintenance will certainly make your work more efficient. Currently, there are thinning shears available that are less damaging to hair.
Examples include Unison Scissors' Angel series.

https://unison-scissors.com/collections/%E8%A3%BD%E5%93%81%E4%B8%80%E8%A6%A6/products/%E3%82%B9%E3%82%AD%E9%8B%8F-angel-%E2%85%B1-3f