Haircutting and Hair Shaping
Know the landmarks and the lines
Reference points guide consistent sectioning: the apex (highest point of the head), parietal ridge, occipital bone, four corners, and nape. Cutting lines are horizontal, vertical, or diagonal; sectioning follows those lines to keep lengths balanced. Distribution (how hair falls from the head) and projection/elevation (angle at which hair is held away from the head) together determine the shape.
Elevation is the whole exam
- 0 degrees - blunt, one-length, maximum weight at the perimeter.
- 45 degrees - graduated (stacked) shape, weight builds at the perimeter.
- 90 degrees - uniform layer, equal length throughout.
- 180 degrees - long layers, shortest at the top, longest at the perimeter.
Guides, tension, and checking
A stationary guide stays in one place and all hair is cut to it (same length). A traveling guide moves with each section (follows the previous cut). Notching creates texture and blends lines. Consistent tension matters: pulling some sections tighter than others creates uneven lines. Always cross-check by combing the hair into its natural fall and re-examining the line. Overdirection creates length increase or graduation toward the face.
Traps to expect
Questions often swap 90 and 180 degrees, or call graduated cutting "layered." Another trap: claiming 0-degree cutting adds volume at the crown - it removes it.
Worked example
A client wants fullness through the crown with tapered ends and blended length. Rule of thumb: volume at the top means shorter hair up top - a 90-degree uniform layer or 180-degree long layer, not a blunt 0-degree cut.