DLC Coatings Arrive in Professional Scissors
Diamond-Like Carbon (DLC) coatings are making their way into the professional scissors market, bringing a technology originally developed for aerospace and medical applications to the salon floor. While decorative coatings on scissors are nothing new — titanium and black oxide finishes have been common for years — DLC represents something functionally different.
What DLC Actually Is
Diamond-Like Carbon is a class of amorphous carbon coatings that share some of the mechanical properties of natural diamond. Applied through physical or chemical vapour deposition in a vacuum chamber, DLC creates an extremely thin layer — typically 1-3 micrometres — that is both very hard and very smooth.
The two properties that matter most for scissors are hardness and friction coefficient. DLC coatings achieve surface hardness values significantly above the underlying steel, which means the coated surface resists wear and micro-abrasion far better than bare metal. The low friction coefficient — DLC surfaces are inherently slippery at the microscale — reduces the resistance that hair encounters as it passes between the blades during a cut.
Practical Benefits
For working stylists, DLC-coated scissors offer several tangible advantages:
Extended edge life. The hard coating protects the cutting edge from the micro-wear that gradually dulls a blade. This does not eliminate the need for sharpening, but it extends the interval between services.
Reduced cutting resistance. Lower friction between blade and hair means less force required per cut. Over the course of a full day’s work — potentially hundreds of individual cuts — this reduction in effort is meaningful for hand and wrist fatigue.
Chemical resistance. DLC is inert to the chemicals commonly encountered in salons, including hair colour, bleach, and cleaning solutions. This adds a layer of protection beyond the corrosion resistance of the underlying stainless steel.
Japanese Manufacturers Leading Adoption
Japanese manufacturers are at the forefront of applying DLC to professional scissors. Kikui’s approach is particularly noteworthy — they combine DLC coating with WPC (Wonder Process Craft) shot peening, a process that blasts fine ceramic particles at the blade surface at high speed before the DLC layer is applied. The WPC treatment modifies the steel’s surface microstructure, creating a better foundation for the DLC coating to bond to and improving the base material’s fatigue resistance.
Cost Considerations
DLC coating adds a significant premium to the price of a scissor. The coating process itself requires specialised vacuum deposition equipment, and the preparation steps add manufacturing time. For high-volume professionals who rely on their scissors for income, the extended edge life and reduced fatigue can justify the investment. For occasional users or students, the cost-benefit calculation is less clear.
As with any technology in this market, the coating is only as good as the scissor beneath it. DLC on a poorly made scissor is an expensive cosmetic treatment, not a performance upgrade.