Red Seal Hairstylist flashcards

32 cards. Read the term and the definition here. The deck at the top of this page is optional.

WHMIS 2015 supplier label

A Canadian workplace label that must show a product identifier, hazard pictograms, signal word, hazard statements, precautionary statements and supplier contact information; a Safety Data Sheet must accompany it.

Safety Data Sheet sections

A Safety Data Sheet has sixteen mandatory sections covering identification, hazards, composition, first aid, firefighting, handling, exposure controls, physical properties, stability, toxicity and disposal; keep the current version accessible.

Hospital-grade disinfectant

Health Canada registers disinfectants as drugs with a Drug Identification Number; only these registered products may be labelled hospital-grade and used on salon implements to kill bacteria, fungi and viruses.

Porous versus non-porous implements

Non-porous items such as metal shears and hard plastic combs can be cleaned and disinfected for reuse; porous items such as wood, foam and buffing blocks absorb liquid and must be discarded after one use.

Disinfectant contact time

The labelled time an implement must remain fully immersed in or wet with disinfectant to achieve its kill claims, commonly ten minutes; cutting the time short invalidates the disinfection step.

Hair porosity

The cuticle's ability to absorb and retain moisture; low porosity resists wetting and processes slowly, while high porosity absorbs quickly, feels rough and loses moisture fast.

Wet hair elasticity test

A wet strand that stretches to roughly fifty percent of its length and springs back has normal elasticity; a strand that snaps or stays stretched is too weak for chemical services.

Patch test timing

Applying a small amount of oxidative dye or relaxer behind the ear or in the elbow crease 24 to 48 hours before the service; any redness, swelling or itching cancels the chemical service.

Natural color level scale

A scale from 1 (black) to 10 (lightest blonde) describing the hair's natural depth; natural level plus target level and percentage of gray determine the formula and developer choice.

Client record card

A written record of service date, formula, developer strength, processing time, patch test result and outcome, used to reproduce a successful result and avoid repeating a previous error.

Chemical service contraindications

Conditions that prohibit or postpone a chemical service, including a previous allergic reaction to the product, open or infected scalp lesions, and hair that is breaking or already chemically damaged.

Zero-degree elevation haircut

Cutting with no elevation and a stationary guide produces a solid form with a heavy, unactivated perimeter, as seen in a blunt bob or one-length cut.

Ninety-degree elevation

Projecting hair straight out from the head and cutting parallel to the subsection creates uniform layers that distribute weight evenly throughout the shape.

Stationary versus traveling guide

A stationary guide keeps every later section at the length of the first for a solid line; a traveling guide moves with each section and builds graduation or layered length.

Overdirection in haircutting

Combing hair away from its natural falling position before cutting, which shifts length toward the overdirection and leaves longer hair on the opposite side of the head.

Cross-checking a haircut

Re-cutting the same section from the opposite direction or from a different parting to confirm the line is even and to expose stepped or missed areas.

Clipper blade numbering

Blades are numbered so lower numbers cut closer to the skin; a fade begins with the closest blade at the perimeter and blends upward to longer blades or shears.

Developer volumes

Ten volume (3 percent) deposits color with little lift, 20 volume (6 percent) lifts one to two levels, 30 volume (9 percent) lifts two to three, and 40 volume (12 percent) lifts three to four.

Underlying pigment by level

The warmth revealed as hair lightens: levels 1 to 3 are red, 4 to 5 red-orange, 6 orange, 7 orange-yellow, 8 yellow, and 9 to 10 pale yellow.

Color wheel neutralizing rule

Colors opposite each other on the color wheel cancel: blue neutralizes orange, violet neutralizes yellow, and green neutralizes red, which guides corrective toning.

Thioglycolate perm chemistry

Ammonium thioglycolate near pH 9 to 9.6 breaks disulfide bonds in the cortex so hair can be reshaped on a rod; a neutralizer then rebuilds the bonds in the new form.

Relaxer neutralization

After the relaxer is rinsed out, a neutralizing shampoo lowers the hair's pH to stop processing and helps re-form disulfide bonds; it is worked in until the lather stays clear.

Hair and scalp pH

Hair and scalp sit near pH 4.5 to 5.5; alkaline products swell and lift the cuticle, while acidic products tighten and smooth it.

Cortex of the hair

The cortex forms most of the hair's bulk and holds the melanin and disulfide bonds; coloring, perming and relaxing chemistry all take place within the cortex.

Hair growth cycle

Anagen is the two to six year growth phase, catagen a transition of a few weeks, and telogen a resting phase of about three months before the hair sheds.

Scalp conditions to refer

Ringworm, impetigo, lice, scabies and any scalp with pus, spreading redness or open sores must be referred to a physician, and the service is not performed.

Medicated shampoo actives

Zinc pyrithione, ketoconazole, selenium sulfide and coal tar are dandruff shampoo actives that reduce Malassezia yeast or slow cell turnover and are used on a set schedule.

Monofilament wig cap

A sheer mesh cap in which each hair is hand-tied, allowing multi-directional parting and a natural scalp appearance at a higher price with delicate handling.

Traction alopecia prevention

Tight braids, weaves or ponytails pull on follicles and can cause permanent hair loss; keep tension low, limit wear time and change anchor points between styles.

Thermal tool temperature range

Flat irons typically run from about 150 to 230 degrees Celsius; fine, lightened or damaged hair needs the lower end, while coarse resistant hair tolerates more heat with a protectant.

Blow-dry nozzle direction

Point the nozzle down the hair shaft from roots to ends and finish with cool air, which lays the cuticle flat for shine and reduces frizz.

Strand-by-strand hair extensions

Individual strands attached with keratin bonds, fusion or micro-links; they move naturally but need gentle brushing, sulfate-free washing and periodic tightening to prevent matting.