Haircutting and Hair Styling
Geometry of a haircut
Know the reference points (apex, parietal ridge, occipital bone, nape, recession, four corners, crown) because items describe sections relative to them. Sections are horizontal, vertical, or diagonal; distribution is where hair is directed within the section (natural fall, 45°, 90°, 135°, 180°); elevation is the angle hair is held away from the head. Elevation builds the shape: 0° blunt, 45° graduation, 90° uniform layer, 180° long layer. A stationary guide builds a shape in one area; a traveling guide moves with the cut. Tension and overdirection control where weight lands - overdirection toward a point adds length there.
Cutting and texturizing
Blunt, point, notch, slice, and thinning-shear techniques each remove weight differently; clipper-over-comb and shear-over-comb build fades and tapers. Cross-check every section in the opposite direction before calling the cut finished, and check the perimeter dry, since wet hair shrinks as it dries.
Styling
Blow-dry, thermal irons, hot rollers, wet sets (base, stem, curl), pin curls (flat and barrel), finger waves, backcombing, and product choice: mousse for volume, gel for control, pomade for shine and hold, serum for smoothing. Test any thermal tool on tissue or a towel, never on the client's hair.
Worked example
A client wants volume through the top with a soft perimeter. Use vertical sections and 90° elevation in the interior with a stationary guide, blend into 45° graduation at the perimeter, then cross-check horizontally.
Rule of thumb
Decide elevation and distribution before the first cut; if the shape is wrong, the first inch was wrong.