Haircutting and Hairstyling
Geometry is the whole game
Haircutting is controlled by sectioning, distribution, elevation, and guide. Elevation is the angle at which hair is held away from the head: 0 degrees builds a solid form or blunt line; 45 degrees builds graduation or a stacked wedge; 90 degrees builds uniform layers; 135 to 180 degrees builds long layers and removes weight. A stationary guide stays in one place and all hair is cut to it; a traveling guide moves with each section. Overdirection shifts hair away from its natural fall to build length toward the face or preserve a perimeter. Tension must be consistent; too much stretches curly hair and produces a short surprise when it dries.
Design and finishing
Read the head: occipital bone, crown, parietal ridge, apex, nape, and recession. Establish the perimeter first when the client wants a defined outline, then balance interior weight. Cross-check by combing hair in the opposite direction and looking for unwanted lines. Texturizing (point cutting, slide cutting, thinning shears) removes weight and softens lines but cannot add density; use it sparingly near the perimeter. Clipper-over-comb and shear-over-comb create tapers and blends; the comb angle controls the fade.
Traps
Questions swap 45 and 90 degrees, or call a traveling guide stationary. Another trap is assuming texturizing fixes a bad haircut or that tension does not matter. Blunt cutting wet curly hair without accounting for shrinkage is a common error.
Rule of thumb
Match elevation to the shape: 0 for a bob line, 45 for a graduated bob, 90 for uniform layers, 180 for a long-layered shag. When in doubt, cut less and cross-check.
Worked example: A client wants volume at the crown and a tapered nape. Use 90-degree elevation in the crown for uniform layers, then switch to clipper-over-comb at the nape, keeping the comb flat to the head for a soft taper.