6.5 Customizing the Cut: Guideline Types & Named Cutting Techniques
Key Takeaways
- The RSOS names four guideline types — interior, perimeter, travelling and stationary — and the exam expects you to pick the right pair for a given shape.
- Undercutting removes weight from beneath the surface, leaving the top length to fall over a shorter interior; disconnection deliberately leaves no blend between two lengths.
- C-shaping and scooping cut a curved rather than straight line so the shape follows the head form and the face frame.
- Texturizing (thinning) shears differ by tooth count: fewer, wider teeth chunk; 30-plus fine teeth blend — and neither is ever used within about 5 cm of the scalp or on the surface of fine hair.
- Customizing has a stopping rule: manipulate the hair, re-evaluate the form, and remove more only if the shape still asks for it — you cannot put hair back.
What "Customizing" Means in the Standard
Sub-task C-7.03 Customizes haircuts carries thirteen performance criteria and is the heaviest single sub-task in MWA C, which is 20% of the exam. It is where the standard puts selecting the cutting technique to personalize the haircut, determining the excess hair to be removed, manipulating hair to determine if more customizing is required, and performing visual evaluation for design shape and form. In other words: the perimeter and the elevation give you a shape; customizing gives you the client's shape.
The Four Guideline Types
Section 5.1 introduced stationary and travelling guides. The RSOS lists four guideline types, and the other two describe where the guide sits rather than whether it moves.
| Guideline | What it is | Used for |
|---|---|---|
| Perimeter guide | The outer edge of the shape — the baseline at the nape, the sides, the fringe | Establishes total length and the silhouette outline; cut first in most shapes |
| Interior guide | A guide taken inside the shape, usually at the crown or top, which the rest of the interior is cut to | Sets the internal layer length independently of the perimeter |
| Stationary guide | A guide that is cut once and never re-cut; every section travels back to it | One-length shapes, uniform layers, over-directed length build-up |
| Travelling (moving) guide | Re-cut with each new section, so it shifts across the head | Graduation, progressive layering, tapers |
Real cuts combine them. A long-layered shape typically uses a stationary interior guide at the top (so every layer returns to one length and the interior stays connected) plus a travelling perimeter guide around the outline. A graduated bob uses a travelling interior with a stationary perimeter. If a question describes a shape and offers guide combinations, work out whether the length must stay the same (stationary) or change progressively (travelling), and whether it applies to the outline (perimeter) or the inside (interior).
The Named Cutting Techniques
These are the techniques the standard lists by name. Sections 5.4 covered point cutting, notching, slicing and slithering; here is the complete set with the ones that were missing.
| Technique | Tool and action | Effect | Typical use |
|---|---|---|---|
| Blunt cutting | Shears, straight across a section held at even tension | Maximum weight and a solid line | One-length bobs, strong perimeters |
| Point cutting | Shear tips into the ends, vertically | Softens the line without shortening it | Almost every finished cut |
| Chunking | Deep, widely spaced notches | Bold, visible separation | Shags, piecey crops, editorial texture |
| Slide cutting (slicing) | Shears held part-open, slid down the strand | Removes weight along the length, blends layers | Thick hair, connecting layers |
| Slithering (effilating) | Shears opened and closed in a sliding motion down the strand | Tapers to graduated lengths, gentler than slicing | Medium-density bulk reduction |
| Feathering | Light point cutting or razor tapering on the very ends | Soft, wispy, tapered ends | Face-framing, fringes, layered ends |
| C-shaping | Cutting a shallow curved (C-shaped) line rather than a straight one | The line follows the curve of the head or the face | Face frames, rounded fringes, curved nape lines |
| Scooping | A deeper curved cut, concave through the middle of the line | A pronounced inward curve | Curved fringes, scooped napes, U-shaped perimeters |
| Undercutting | Removing length or bulk beneath the surface layer | Weight comes out; the surface length still covers it | Heavy occipital areas, bulk under a bob, shaved-under styles |
| Disconnection | Deliberately leaving two lengths unblended | A visible, intentional step | Undercuts, editorial and fashion shapes |
Two of these are constantly confused and are worth pinning down. Undercutting removes weight from underneath so the surface hair lies flatter and the silhouette narrows — the client still has their length, it just sits closer to the head. Disconnection is the absence of a blend: two lengths meet with no transition, on purpose. An undercut may be disconnected or blended; a disconnection is a design decision, not a mistake, and it must be agreed at consultation because it cannot be blended away without cutting the top length down to the short length.
C-shaping and scooping matter because the head is curved and a straight line drawn across a curve does not read as straight when it is worn. A fringe cut dead-straight across sits shorter at the temples once the hair curves around the head; a shallow C compensates. Scooping is the same idea taken further, and it is how a U-shaped or curved nape is built.
Texturizing (Thinning) Shears
The standard lists texturizing shears among the cutting tools, alongside conventional shears, razors and clippers. They are not interchangeable.
| Shear type | Teeth | Removes | Best for |
|---|---|---|---|
| Blending / finishing shear | 30-46 fine teeth | Roughly 10-20% per pass | Softening a line, blending a step, refining a dry cut |
| Texturizing shear | 14-28 teeth | Roughly 20-40% per pass | Reducing bulk in medium to thick hair |
| Chunking shear | 5-12 wide teeth | Large, visible sections | Deliberate separation and piecey texture |
Three rules the exam tests:
- Stay away from the scalp. Keep thinning shears roughly 5 cm (2 inches) or more from the scalp. Cut closer and the short stubs stand straight up through the surface and never lie down.
- Work the underside. Remove bulk from beneath a subsection, not from the surface, or the cut ends flick out through the top and frizz.
- Fine hair rarely needs them. Thinning fine hair reveals the sparseness rather than hiding it, and thinning curly hair on the surface destroys the pattern (Section 6.2).
Deciding How Much to Remove — and When to Stop
Performance criterion C-7.03.03P asks you to determine excess hair to be removed according to hair characteristics and desired results, and the standard's list of desired results is short and useful: increased volume, reduced bulk, accentuated effects. Match the technique to the goal rather than reaching for the same tool every time — volume comes from shorter interior layers and root-area support, bulk reduction comes from slicing, slithering and undercutting, and accentuated effects come from chunking, disconnection and feathering.
Then apply C-7.03.10P: manipulate the hair to determine if more customizing is required. Shake it out, push it back, drop it into natural fall, look at the form, and only then decide whether to remove more. Every removal is permanent, so the professional habit is to take less than you think you need, evaluate, and take a second pass if the shape still asks for it. A cut that is slightly under-texturized can be finished in two minutes at the next visit; an over-texturized cut takes months to grow out.
A client wants to keep their shoulder-length one-length bob but complains it is too heavy and puffs out at the back. Which technique addresses this without shortening the visible length?
A stylist is building a long-layered shape in which every interior layer must finish at the same length while the outline stays long. Which guideline combination is correct?
Why must texturizing shears be kept roughly 5 cm (2 inches) away from the scalp?