How Does Cutting Cause Hair Damage?

Surely you are wondering what causes hair damage from cutting. In the following section this issue is explained and displayed. This can only be achieved with the LanceMARK blades and Cryo425 cutting edges, which are standard on all Kagawa shears.

How well hair recovers after it has been sheared is largely a function of the cut. If the cutting edge is rough it will snag the core and sheath as it passes through. These snags vary in severity, but any one of them can cause a split to begin in the sheath which occasionally becomes damage (frizz or split ends). The thickness of the cutting edge can be equally destructive. Consider figure 7, the blade is thick, so as it passes through the shaft the hair must elongate, allowing room for the blade. Elongation opens the sides of the sheath to tearing and splitting, so a thinner blade is a better blade. Figure 8 shows the reduced profile of LanceMARK blades and how the hair's elongation is reduced by over half. Notice the diagrams show only one of two blades cutting the hair; this is case with shears, only the sharper of the two blades will cut at a given point.

Cryo425 Cutting Edges

Over a decade ago a number of the IIBOR scientist were challenged with developing a cutting edge that would eliminate hair damage. Working in conjunction with researchers associated with the British Royal Academy of Sciences they developed the Cryo425 geometric profile. The technology was so advanced it was only used in a laboratory setting. When the DHMS technology was developed it made it possible to place it on hair shears. Today, every Kagawa IIBOR Shear carries the Cryo425 cutting edge profile, and every shear is certified to eliminate all damage to the hair.  Only with DHMS sharpening, can this unique combination of technology be obtained to achieve damage-free cuts.

Next Chapter: How to get DHMS and Cryo425 for your shears.