8.1 Textured Styling, Extensions, Braiding & Locking

Hairstyling accounts for only 2% of the Michigan PSI National Cosmetology theory exam — roughly two scored items — but the content tested is dense: textured hair care, hair extensions, locking, braiding, and hair pieces all live in this domain. Because the section is short, PSI tends to ask precise, definitional questions rather than broad conceptual ones, so knowing exact terminology (which method is which, what "on-base" means, what causes traction alopecia) matters more than general familiarity.

Working with Textured Hair

Textured hair — hair with a wavy, curly, or coily natural pattern — has a flatter, more oval cross-section and more twists per inch than straight hair, which means fewer cuticle layers touch adjacent strands and moisture escapes faster. Practical implications for styling:

• Detangle before shampooing, working from the ends toward the scalp, to reduce breakage during the wash and styling process.
• Section the hair into manageable panels before applying products, braiding, or blow-drying so no area is skipped or overworked.
• Moisture and sealants (leave-in conditioners, oils, creams) are used more heavily on coily textures because the hair's natural sebum has a harder time traveling down the shaft's twists.
• Wide-tooth combs and fingers are preferred over fine-tooth combs for detangling coily hair to minimize breakage.

Braiding Fundamentals

Braiding is the foundation for many extension and locking techniques, so the theory exam expects cosmetologists to know the core plaiting patterns:

• Three-strand plait — the classic braid: hair is divided into three even sections that are crossed alternately over one another (for example, the right section crosses over the center, then the left section crosses over the new center) to form a woven rope pattern.
• Cornrows (underhand/inverted braiding) — small three-strand plaits braided by feeding each new strand underneath rather than over, which raises the braid off the scalp so it sits flat and close to the head. Cornrows follow a directional part pattern the cosmetologist designs before braiding begins.
• French braid (overhand braiding) — hair is added into each of the three sections as the braid moves down the head, blending loose hair into the plait.
• Dutch braid — the inverse of a French braid; strands cross underneath instead of over, producing a braid that appears to sit on top of the hair rather than woven into it.

Braid tension must be firm enough to hold the pattern but never so tight that the client reports pain, tingling, or visible pulling of the scalp — those are warning signs of excessive tension.

Hair Extensions: Methods of Application

Fusion methods require close attention to heat exposure near the scalp, while micro-link and tape-in methods avoid heat entirely, which makes them a better option for clients who cannot tolerate thermal application near the follicle.

Extension Maintenance and Removal

Maintenance:

• Brush extensions starting at the ends and working upward, never dragging a brush through knots from the root down.
• Loosely braid or use a satin cap/pillowcase at night to reduce matting and friction at the bonds.
• Avoid piling heavy oils or conditioners directly on fusion bonds or micro-links, since product buildup can loosen the attachment prematurely or cause slippage.
• Schedule move-up or retightening appointments every 6–8 weeks as natural hair grows and the bond or track shifts away from the scalp.

Removal (method-specific):

• Fusion bonds are dissolved with an alcohol- or oil-based bond remover applied directly to the keratin bond, then gently crushed and slid off — never pulled.
• Micro-links are reopened with pliers and slid off; the bead is never cut through hair to remove it.
• Tape-ins are released with an adhesive remover that breaks down the tape bond without solvent damage to the cuticle.
• Wefted tracks are removed by carefully cutting the sewing thread with extension-safe scissors, never cutting close enough to nick the client's natural hair.

Locking (Dreadlocks) Fundamentals

Locking is a long-term texture service that intentionally matts and coils sections of hair into permanent rope-like locks. Starting methods include:

• Backcombing — hair is combed against the direction of growth to create a tangled base that is then rolled and shaped into a lock.
• Twist-and-rip — small sections are twisted, then torn to encourage matting at the tear point.
• Interlocking — a latch-hook style tool passes the end of the lock back through its own base, tightening the lock without added product.
• Freeform — hair is left to mat naturally with only occasional separation, producing irregular lock shapes.

Once started, locks are maintained by palm-rolling (rolling the lock between the palms with a light locking gel to reinforce the coil) or retightening the root as new growth emerges. A thorough client consultation should screen for scalp conditions, prior chemical relaxer use, and hair breakage risk before starting locks, since the process is difficult to fully reverse.

Hair Pieces and Wigs

Hair pieces range from full wigs (covering the entire head) to partial pieces such as integration pieces or toppers (covering thinning areas while blending with the client's own hair) and lace-front wigs (a sheer lace panel at the hairline for a natural-looking edge). Proper fitting starts with measuring the head circumference and securing the piece with combs, adjustable straps, clips, or adhesive so it stays put without excessive pressure on the scalp.

Across every technique in this section, the unifying safety principle is tension control: extensions, braids, locks, and wigs all sit directly on the follicle, and any method applied too tightly over time can cause traction alopecia — permanent hair loss from sustained pulling. Cosmetologists are expected to recognize early signs (redness, bumps, client discomfort) and loosen or decline the service rather than proceed.