Haircutting and Hair Shaping
The vocabulary that gets tested
Reference points: apex, parietal ridge, occipital bone, nape, crown, and the ear, eyebrow, and chin lines. Lines: horizontal lines build weight, vertical lines remove weight, diagonal lines blend. Distribution is how hair falls from the parting - natural fall, shifted, or perpendicular. Tension is the stress applied to the strand while cutting; uneven tension produces uneven lines.
Elevation is the single most tested concept. Held flat at 0 degrees, hair is cut to one length (blunt). At 45 degrees you build graduation, stacking weight. At 90 degrees you get uniform layers. At 180 degrees, hair is held straight up for long layers and maximum length retention with movement. The higher the elevation, the more weight is removed and the more movement the shape has.
A guide is the first cut strand that all others follow. A stationary guide stays in place and builds weight; a moving (traveling) guide travels with each section and blends. Sections are kept clean and subsections no wider than the tool.
Tools change the result: shears for clean blunt lines, razors for soft texture (avoid on fine or fragile hair), clippers for tapers and fades, thinning shears and point cutting, notching, slithering, and channel cutting for removing bulk without shortening the perimeter. Cross-check the finished shape against the opposite side.
Growth patterns matter: cowlicks, whorls, and widow's peaks resist styling and should be worked with, not forced.
Traps
- Confusing graduated (45 degrees, stacked weight) with layered (90 degrees and above).
- Assuming texturizing always shortens the perimeter - it usually does not.
- Cutting with dull or dirty shears; shear blades are closed when set down and disinfected between clients.
Rule of thumb
Elevation predicts the outcome: 0 degrees equals one length, 45 graduated, 90 uniform layers, 180 long layers.