TESDA Hairdressing NC II key terms

A structured conversation before service where the hairdresser asks about the client's hair history, lifestyle, preferences, and expectations, then explains what is achievable and agrees on the service plan.

The hands-on assessment of a client's hair density, texture, porosity, elasticity, and scalp condition, used to choose products, processing times, and techniques that will not damage the hair.

The hair's ability to absorb and hold moisture, judged by how quickly strands wet or dry; high porosity takes colour fast and fades fast, while low porosity resists chemical penetration.

A wet-strand check where hair is gently stretched; healthy hair extends and springs back, while hair that snaps or stays limp is too damaged for chemical services until treated.

A small amount of product applied to skin, usually behind the ear or inner elbow, and observed for 24 to 48 hours to detect allergic reaction before a colour or chemical service.

A trial of colour, bleach, or relaxer on a small hidden section of hair to predict how the full head will react, confirming processing time and product strength before committing.

How much hair grows per square centimetre of scalp, classified as thin, medium, or thick; density affects how much product is needed and how sectioning is planned.

The diameter of an individual hair strand, described as fine, medium, or coarse; fine hair processes faster and holds less volume, while coarse hair needs longer processing and stronger products.

The natural direction and fall of hair, including cowlicks, whorls, and growth at the hairline; these guide how hair is parted, cut, and set so the finished style lies correctly.

Dividing the hair into clean, controlled subsections with clips or ties so each area is worked evenly and systematically during cutting, colouring, perming, or styling.

A clean line dividing hair, made with a comb tail or fingers; partings define the style's balance and also create the boundaries of sections for chemical and cutting work.

A cut where all hair in a section is trimmed at one level, producing a solid, straight edge and maximum weight at the perimeter; it is the base for one-length styles.

A cutting technique where hair is elevated slightly and cut to build weight and a stacked line, commonly used at the back of the head to create shape and volume.

Cutting hair at varying elevations so shorter lengths sit over longer ones, removing weight and adding movement; the degree of layering controls volume and shape.

The angle at which hair is held away from the head while cutting, measured from 0 degrees at the scalp to 180 degrees; elevation determines where length falls and how much layer forms.

The pull applied to hair while cutting, colouring, perming, or blow-drying; correct, even tension keeps sections accurate, while excessive tension causes uneven results or client discomfort.

A hydrogen peroxide solution mixed with colour or lightener to open the cuticle and oxidise dye; its volume strength controls how much lift or deposit occurs during processing.

A circular chart of primary, secondary, and tertiary colours used to predict colour results, choose toners, and neutralise unwanted tones during colour correction.

Applying a gentle, low-lift colour to adjust or neutralise the underlying tone of pre-lightened or coloured hair, producing a cooler, warmer, or more balanced final shade.

Any service that permanently alters hair structure through colour, lightener, relaxer, or perm chemicals; it requires analysis, timing control, and protection of scalp and previously treated hair.

A cylindrical tool around which hair is wound for a permanent wave; rod diameter and winding pattern determine curl size, direction, and the resulting wave shape.

Shaping and drying hair with a hand dryer and brush, using direction and tension to smooth the cuticle, build volume, or turn ends under or out for the finished look.

Using heated tools such as flat irons, curling irons, or hot rollers to shape hair; temperature must match hair texture and condition to avoid scorching or permanent damage.

The final stage of a service where the style is checked against the agreed plan, ends are trimmed or smoothed, product is applied sparingly, and the client is shown home-care advice.

A written or digital record of each client's services, products, strengths, and processing times, kept so future visits are consistent and reactions or complaints can be traced.

The practices and legal duties that keep workers and clients safe, covering chemical handling, electrical equipment, ventilation, hygiene, waste disposal, and reporting of hazards and incidents.

A document supplied with each chemical product listing its hazards, safe handling, first-aid measures, storage, and disposal; it must be available where chemicals are stored and used.

Items worn to reduce exposure to workplace hazards, such as gloves, apron, and eye protection for chemical work, and closed shoes for handling spills and sharp tools.

Cleaning and disinfecting tools, surfaces, and hands to prevent the spread of infection between clients, including sterilising metal implements and discarding single-use items after each client.

Sorting salon waste into correct streams, such as general, recyclable, and hazardous chemical or sharps waste, so it is disposed of lawfully and safely.

Checking the client's position, cape and towel fit, scalp condition, and any allergies or medical concerns before and during service so the experience is safe and comfortable.

A prepared set of actions for emergencies such as fire, chemical spill, or client collapse, covering evacuation routes, first-aid arrangements, and who to notify.

The ability to listen actively, ask clear questions, explain services in plain language, and confirm understanding with clients and colleagues, including respectful handling of complaints.

Meeting client expectations through punctuality, courtesy, accurate advice, and follow-through, including resolving dissatisfaction politely and escalating issues when needed.

Accepted conduct in a salon, such as punctuality, proper grooming and uniform, respect for colleagues, confidentiality, and keeping personal matters separate from client service.

The standards guiding honest practice, including not making false claims about results, respecting client privacy, charging fairly, and refusing services that would harm a client's hair.

Working cooperatively with colleagues by sharing workload, covering tasks, passing on client information accurately, and supporting others during busy periods or difficult services.

Maintaining accurate, legible records of clients, stock, appointments, and safety checks so information is available when needed and legal or salon requirements are met.

Regularly reviewing your own work, seeking feedback, and updating skills through training so service quality and efficiency keep improving over time.