KY Barber cheat sheet

Sanitize = reduce pathogens on surfaces to a safe level (EPA-registered disinfectant, label contact time); sterilize = destroy all microbial life including spores (autoclave, dry heat, or chemical sterilant).

Disinfect implements only after cleaning: wash with soap and water, dry, then fully immerse in an EPA-registered hospital-grade disinfectant labeled for bloodborne pathogens or tuberculocidal.

Porous items that contact blood or body fluids (towels, neck strips, cotton, emery boards, wooden sticks) are single-use and must be discarded; they cannot be disinfected.

Blood spill protocol: don gloves, stop the bleed, clean the area, disinfect with an EPA-registered tuberculocidal product, and place contaminated waste in a sealed bag.

Hand washing is the primary infection control measure: soap and running water for at least 20 seconds, then dry with a single-use towel; alcohol-based sanitizer is a fallback, not a substitute.

Implements that cut or puncture skin (razors, shears, clipper blades, extractors) must be cleaned and then sterilized or disinfected with a product labeled as a sterilant or tuberculocidal disinfectant.

Electrical safety: keep cords away from water, unplug before cleaning, never immerse clippers or dryers, and check for frayed cords and damaged plugs before each use.

MSDS/SDS sheets must be on file for every chemical in the shop; know the location of the eyewash, first-aid kit, and fire extinguisher, and keep exits unobstructed.

Scalp analysis before every shampoo: check for abrasions, lesions, redness, flakes, oiliness, and parasites; contraindications include open sores, recent chemical burns, and active fungal infection.

Water temperature for shampooing is warm (about 98-105°F / 37-40°C); hot water strips sebum, increases redness, and is contraindicated for scalp irritation.

Surfactant chemistry: the hydrophobic tail binds oil and soil, the hydrophilic head binds water; the lather lifts soil so it can be rinsed away. Anionic surfactants clean best; nonionic and amphoteric surfactants are gentler.

Shampoo selection: clarifying shampoo for buildup, moisturizing or conditioning shampoo for dry or chemically treated hair, medicated shampoo (zinc pyrithione, selenium sulfide, ketoconazole) for dandruff and seborrheic conditions.

Conditioner acts on the cuticle: it lowers friction, closes the cuticle, and adds temporary moisture; apply mid-shaft to ends, keep off the scalp for oily scalps, and rinse thoroughly.

Scalp massage uses light, circular, fingertip pressure from the hairline to the crown; it increases blood flow but must not be performed over inflamed, broken, or infected skin.

Hair analysis terms: porosity (ability to absorb moisture), elasticity (stretch and return), density (strands per square inch), texture (strand diameter), and growth pattern (cowlick, whorl).

Treatment categories: protein treatments replace lost keratin and strengthen; moisturizing treatments add water and lipids; medicated treatments address scalp conditions and require patch testing when indicated.

Reference points: parietal ridge, apex, occipital bone, nape, crown, and four corners; a consistent reference point keeps sections symmetrical on both sides.

Sectioning: horizontal sections build weight and length; vertical sections build graduation and layered movement; diagonal sections blend forward or backward depending on direction.

Elevation controls the shape: 0° = blunt/one length, 45° = low graduation, 90° = uniform layers, 135° = long layers, 180° = short layers with maximum volume.

Cutting angle: distribute tension evenly and cut with the shear blade parallel to the section; a consistent tension prevents uneven lines and split ends.

Guidelines: stationary guide (fixed section used for all following cuts) versus traveling guide (each cut becomes the next guide) - the choice determines whether length stays even or progresses.

Texturizing tools: thinning shears remove bulk without changing length; notching and point cutting soften lines; razor cutting creates soft, tapered ends but requires care with fine or curly hair.

Clipper work: use guards for uniform lengths, keep blades cool and oiled, and always cut against the direction of hair growth only when the desired result is a shorter, closer cut.

Cross-checking: comb hair in the opposite direction and inspect the outline; check both sides against the nose and ears for balance before finishing.

Shaving lather: apply warm lather in the direction of hair growth; the beard softens best with warm water and a moist towel for 2-3 minutes before the first pass.

Razor angle is about 30° to the skin; use short, light strokes and never apply pressure. Shave with the grain first; against-the-grain passes increase irritation and ingrown hair risk.

Skin tension: hold skin taut ahead of the razor; shave the neck upward and the face downward in the direction of growth, rinsing the blade after each stroke.

Hot towel before, cool towel after: heat opens pores and softens hair; cool compresses reduce redness and close pores. A styptic is used for minor nicks.

Contraindications for shaving: acne lesions, razor bumps (pseudofolliculitis barbae), open sores, recent chemical peel, sunburn, and active skin infection.

Beard design: establish the neckline just above the Adam's apple and the cheek line naturally; trim with the growth direction, then detail edges with a trimmer or razor.

Moustache and beard trims use clippers or scissors with the comb as a guard; keep lines symmetric by checking from the front and both profiles.

Single-use razor blades must be discarded in a sharps container; never reuse a blade on another client, and sanitize the razor handle between clients.

Permanent wave chemistry: the reducing agent (ammonium thioglycolate or glyceryl monothioglycolate) breaks disulfide bonds; the neutralizer (hydrogen peroxide or sodium bromate) rebuilds them in the new shape.

Permanent wave test curl determines processing time; check at 5-10 minute intervals. Do not shampoo before a perm - the scalp needs its natural oils as a barrier.

Relaxer chemistry: sodium hydroxide (lye, pH ~13) or guanidine hydroxide (no-lye) straightens by breaking disulfide bonds; the neutralizer/acid rinse stops the action and restores pH.

Relaxer base and protectant: apply protective base to the scalp and hairline, keep relaxer off previously relaxed hair (except for a retouch), and never exceed the manufacturer's processing time.

Hair color levels 1-10 (1 = black, 10 = lightest blonde); the developer volume determines lift: 10 volume = deposit only, 20 volume = 1 level lift, 30 volume = 2-3 levels, 40 volume = 3-4 levels.

Color categories: temporary (stains cuticle, washes out), semi-permanent (deposits in cuticle, no lift, lasts 6-8 shampoos), demi-permanent (low-volume developer, no lift), permanent (lifts and deposits, requires patch test 24-48 hours before).

Patch test and strand test are mandatory before color and lightener services; record results. Lightener (bleach) lifts natural pigment and cannot lift previously colored hair reliably.

Color wheel: opposite colors neutralize (blue cancels orange, violet cancels yellow, green cancels red); apply to the darker or cooler side to avoid muddy results.

Hair structure: medulla (core, absent in fine hair), cortex (bulk, contains melanin and keratin), and cuticle (outer overlapping scales that protect the cortex).

Hair follicle: the root and bulb sit in the follicle; the dermal papilla supplies blood and nutrients; the sebaceous gland secretes sebum; the arrector pili muscle causes goosebumps.

Growth cycle: anagen (active growth, 2-6 years), catagen (transition, 2-3 weeks), telogen (resting, about 3 months); shedding of 50-100 hairs daily is normal.

Hair pigment: melanin in the cortex; eumelanin is brown/black, pheomelanin is red/yellow; gray hair results from loss of melanin production, not from air in the hair.

Skin layers: epidermis (outer, avascular), dermis (contains hair follicles, glands, nerves, blood vessels), and subcutaneous layer (fat, insulation, shock absorption).

Skin functions: protection, sensation, heat regulation, excretion, secretion, and absorption; absorption matters for chemical services and patch testing.

Bones of the skull relevant to barbering: frontal, parietal, temporal, occipital, zygomatic (cheek), and mandible (lower jaw); the occipital bone is the reference for the nape.

Muscles of the face and head: frontalis, temporalis, masseter (chewing), orbicularis oculi and oris, and the platysma in the neck; the sternocleidomastoid is the major neck landmark.

Barbering in Kentucky is regulated by the Kentucky Board of Barbering under KRS Chapter 317; the Board licenses barbers, barber apprentices, barbershops, and instructors.

Licensure requires completion of an approved barber program (commonly 1,500 hours) and passing the Board-approved written and practical examinations; verify current hour requirements with the Board before enrolling.

Barbershop license and display: the shop license and individual licenses must be posted in public view; a shop may not operate without a licensed barber on duty.

Sanitation requirements include a covered container for sanitized implements, a closed container for soiled linens, a covered waste receptacle, and a hand-washing sink accessible in the work area.

Continuing education and renewal: licenses renew on the cycle set by the Board; late renewal may require a fee and possibly reexamination - confirm current rules with the Board.

Unlicensed practice, allowing an unlicensed person to perform services, and false advertising of licensure are prohibited and subject to disciplinary action by the Board.

Client records and chemical services: keep records of chemical services and patch test results; refuse service when a contagious condition or contraindication is present.

Inspection authority: Board inspectors may enter a licensed shop during business hours to inspect sanitation, licensure, and equipment; violations may result in fines, suspension, or revocation.

Client consultation: assess hair and scalp, ask about chemical history, medications, allergies, and expectations; document the agreed service and price before starting.

Informed consent and patch tests: explain risks of chemical services, perform patch and strand tests, and record results; never guarantee a result you cannot control.

Confidentiality: client information, health conditions, and photos are private; do not discuss clients or share images without written permission.

Professional boundaries and hygiene: arrive prepared, wear clean attire, keep breath and hands fresh, avoid eating or phone use on the floor, and never discuss a client's personal matters.

Pricing and records: keep a written price list, itemize services, record payments, and maintain inventory and appointment records for tax and audit purposes.

Team and shop management: define roles, schedule staff against demand, train on sanitation and chemical protocols, and hold regular safety meetings.

Conflict resolution: address complaints privately, listen, document, and offer a remedy within shop policy; escalate to the Board only when required by law.

Continuing education and licensure upkeep: track renewal dates, CE hours, and certification cards; stay current on product SDS and Board rule changes.

pH scale 0-14: hair and skin are acidic (hair ~4.5-5.5, skin ~4.5-5.5); alkaline products swell the cuticle and lift it, acidic products close and smooth it.

Shampoo surfactants: anionic (strongest cleansing, e.g., sodium lauryl sulfate), amphoteric (mild, e.g., cocamidopropyl betaine), nonionic (gentlest, used in baby and color-care shampoos).

Chemical bonds in hair: disulfide (strongest, changed by perms and relaxers), salt (broken by water and reformed on drying), hydrogen (broken by water and heat), and peptide bonds (broken only by strong chemicals).

Relaxer pH: sodium hydroxide ~13, guanidine hydroxide (no-lye) ~13 after mixing; both are strongly alkaline and require gloves, base, and strict timing.

Hydrogen peroxide developer: 10 vol = 3%, 20 vol = 6%, 30 vol = 9%, 40 vol = 12%; higher volume means more lift and more cuticle damage.

Patch test timing: apply a small amount behind the ear or inner elbow 24-48 hours before a color service; a positive reaction (redness, itching, swelling) contraindicates the service.

Product storage: keep chemicals in labeled original containers, away from heat and sunlight, and never mix products unless the manufacturer's directions specify it.

Safety data sheets (SDS) list hazards, first aid, and handling for each product; they must be accessible in the shop and reviewed before using a new product.

Service menu: haircut, clipper cut, beard trim, shave, facial, shampoo and style, color, perm, and relaxer; each has a defined time, price, and sanitation protocol.

Client draping: use a neck strip and cape for haircuts, and a fresh towel plus cape for shaves; change linens between every client.

Consultation questions: What look do you want? What products do you use? Any allergies, medications, or recent chemical services? Any scalp conditions?

Facial services: cleanse, exfoliate, steam, extract (only with proper training), massage, and moisturize; avoid extraction on inflamed or infected skin.

Shampoo and scalp massage sequence: wet, lather, massage with fingertips, rinse thoroughly, condition, rinse, towel dry, and comb.

Finishing and styling: use the correct product for the hair type (pomade for hold and shine, clay for matte texture, gel for strong hold) and show the client how to recreate the look.

Retail and home care: recommend products based on hair type and service; explain how often to shampoo and when to return for a trim or color refresh.

Client experience: greet promptly, confirm the service and price, keep the station clean, offer a mirror check, and invite feedback before the client leaves.

Shears: keep blades sharp, oil the pivot, and never cut paper or drop them; dull shears pull hair and cause split ends.

Clippers and trimmers: brush out hair after each use, oil blades regularly, and disinfect the blade with an EPA-registered product; detachable blades must be cleaned and disinfected between clients.

Razors: straight razors must be stropped and honed; disposable blades are single-use and discarded in a sharps container after each client.

Combs and brushes: wash with soap and water, then immerse in disinfectant for the label contact time; remove hair from brushes before disinfecting.

Cap and foiling tools: clean and disinfect after each use; foils and cap hooks are single-use when they contact the scalp or chemicals.

Towels and linens: use once per client, wash in hot water with detergent, and store clean linens separately from soiled ones.

Electrical equipment: inspect cords and plugs, keep dryers and clippers away from water, and unplug before cleaning or servicing.

Inventory control: track usage of blades, gloves, disinfectant, and chemicals; reorder before stockouts and store products according to label directions.

Know the exam format: the Kentucky barber exam typically includes a written theory test and a practical performance test; confirm current format and passing scores with the Board or testing vendor.

Written test domains mirror the license scope: sanitation, hair and scalp, cutting, shaving, chemical services, anatomy, law, and shop management; weight study time to weak domains.

Practical test preparation: practice the exact procedures (shampoo, haircut, shave, beard trim, chemical service) with sanitation steps narrated and timed.

Sanitation is heavily weighted: memorize the difference between cleaning, sanitizing, disinfecting, and sterilizing, and know which tools require which level.

Use scenario questions: identify the safest, most client-centered action; when in doubt, choose the option that follows manufacturer directions and Board rules.

Memorize key numbers: pH values, developer volumes, growth cycle phases, hair color levels, and Kentucky hour and renewal requirements.

Practice with a timer and review missed questions by domain; keep an error log and re-test weak areas weekly.

On exam day: read the full question, watch for absolutes like 'always' and 'never', and answer every question - there is no penalty for guessing.

Contagious conditions requiring referral or refusal: ringworm (tinea), impetigo, scabies, lice, and conjunctivitis; do not service and refer to a physician.

Non-contagious scalp conditions: dandruff (pityriasis), seborrheic dermatitis, psoriasis, and contact dermatitis; medicated shampoo may help but refer persistent cases.

Hair loss types: androgenetic alopecia (pattern baldness), alopecia areata (patchy, autoimmune), telogen effluvium (stress or illness shedding), and traction alopecia (from tight styles).

Hair shaft disorders: split ends (trichoptilosis), knotted hair (trichonodosis), and fragilitas crinium (brittle hair); treat with conditioning and gentle handling.

Skin lesions: primary lesions (macule, papule, pustule, vesicle, wheal) versus secondary (crust, scale, scar, ulcer); note any lesion before service.

Pigmentation disorders: hyperpigmentation, hypopigmentation, vitiligo, and albinism; these affect color service planning and expectations.

Sebaceous and sudoriferous glands: sebaceous glands secrete sebum (acne, oily scalp); sudoriferous glands secrete sweat (eccrine and apocrine).

When to refer: sudden hair loss, painful or bleeding lesions, persistent itching, and any suspected infection require medical referral, not a barbering service.

Practical stations commonly include shampoo and scalp massage, haircut, shave, beard trim, and a chemical service; each station is scored on sanitation, procedure, and result.

Sanitation at every station: wash hands, set up a clean station, use a fresh neck strip and cape, and disinfect implements before and after the service.

Shampoo station: analyze the scalp, adjust water temperature, lather and massage with fingertips, rinse thoroughly, and towel dry without rubbing.

Haircut station: consult, section consistently, use a stationary or traveling guide, cross-check, and clean up the station before the client leaves.

Shave station: prepare the beard with warm towel and lather, hold the razor at about 30°, shave with the grain, and finish with a cool towel and styptic if needed.

Chemical station: patch and strand test, protect the client's skin and clothing, follow the manufacturer's timing, and neutralize or rinse completely.

Written test traps: questions about the difference between disinfecting and sterilizing, which items are single-use, and which conditions contraindicate service.

Time management: practice each station within the allotted time, narrate sanitation steps, and keep a checklist of required supplies for each station.

Shop license: apply to the Kentucky Board of Barbering, pay the fee, pass inspection, and post the license; the shop must have a licensed barber on duty during operating hours.

Physical requirements: adequate lighting and ventilation, hot and cold running water, a hand-washing sink, cleanable floors and surfaces, and separate storage for clean and soiled items.

Recordkeeping: keep client service records, chemical and patch test records, employee licenses, and sanitation logs; retain records as required by the Board.

Employment: verify each barber's license before hiring, keep copies on file, and ensure apprentices work only under a licensed barber's supervision.

Insurance: professional liability and general liability coverage protect against claims; check policy exclusions for chemical services.

Marketing and advertising: advertise only licensed services, avoid false or misleading claims, and follow Board rules on signage and price lists.

Financial basics: track cost per service, set prices to cover supplies, rent, and labor, and review profit margins monthly.

Exit and transfer: notify the Board of changes in ownership, location, or closure; a new owner must obtain a new shop license before operating.

Bloodborne pathogens of concern in barbering: hepatitis B, hepatitis C, and HIV; transmission requires contact with infected blood or body fluids through broken skin or mucous membranes.

Standard precautions apply to every client: treat all blood and body fluids as infectious, wear gloves for any service that may cause bleeding, and wash hands after glove removal.

Exposure incident: wash the area with soap and water, flush mucous membranes, report to a supervisor, and seek medical evaluation; document the incident.

Sharps: place used razor blades and other sharps in a puncture-resistant, labeled sharps container; never recap or bend blades by hand.

Contaminated waste: blood-soaked items go in a sealed, labeled bag; do not place them in general trash.

Disinfectant selection: use an EPA-registered hospital-grade disinfectant with a tuberculocidal claim for bloodborne pathogen control; follow the label contact time exactly.

Gloves: change between clients, never wash and reuse disposable gloves, and remove gloves without touching the outside surface.

Vaccination and training: hepatitis B vaccination is recommended for barbers; annual bloodborne pathogen training and exposure control plan review are best practice.

Color wheel: primary (red, yellow, blue), secondary (orange, green, violet), and tertiary colors; complementary colors neutralize unwanted tones.

Levels 1-10: 1 black, 2 very dark brown, 3 dark brown, 4 medium brown, 5 light brown, 6 dark blonde, 7 medium blonde, 8 light blonde, 9 very light blonde, 10 lightest blonde.

Undertones: natural hair has underlying pigment (red, red-orange, orange, orange-yellow, yellow, pale yellow) that is exposed when lifting; match the developer to the desired lift.

Formulation: mix color and developer in the ratio specified by the manufacturer (often 1:1 or 1:2); use a color bowl and brush, and apply to dry hair unless directed otherwise.

Application order: retouch applies to new growth only; virgin application applies to mid-shaft and ends first, then the scalp area, to avoid uneven lift.

Lightener: lifts natural pigment; do not apply over previously colored hair without a strand test; watch for breakage and stop at the desired level.

Toning: use a demi-permanent or semi-permanent color to neutralize unwanted warmth after lightening; toners deposit only and do not lift.

Color removal and correction: use a color remover or gentle lightener according to the manufacturer; correct in stages and re-evaluate the hair's elasticity between steps.

Perm procedure: shampoo and towel dry, section, wrap rods with even tension, apply waving lotion, process with a test curl, rinse, apply neutralizer, process, rinse, and style.

Rod size and wrap: smaller rods create tighter curls; wrap hair perpendicular to the rod for a uniform curl; end papers protect the ends.

Processing time: determined by hair porosity, texture, and product strength; check a test curl every 5-10 minutes and do not exceed the manufacturer's maximum.

Neutralizer: hydrogen peroxide or sodium bromate rebuilds disulfide bonds; leave it on for the full recommended time and do not shampoo immediately after.

Relaxer procedure: shampoo and dry, apply base, section, apply relaxer to new growth, smooth, process, rinse thoroughly, apply neutralizer, and condition.

Relaxer retouch: apply relaxer only to new growth; overlapping onto previously relaxed hair causes breakage and scalp burns.

Chemical burns: rinse immediately with cool water, do not neutralize with shampoo, and refer to a physician if the burn is severe.

Aftercare: wait 48-72 hours before shampooing after a perm or relaxer, use sulfate-free and moisturizing products, and schedule a follow-up trim.

Beard shapes: full beard, goatee, Van Dyke, chinstrap, mutton chops, and extended goatee; choose based on face shape and hair growth pattern.

Face shape guidance: round faces benefit from a longer, angular beard; long faces benefit from a fuller, shorter beard; square faces suit most styles.

Neckline: place the line just above the Adam's apple, following the natural jaw curve; a straight line across the neck looks unnatural.

Cheek line: follow the natural cheek line; do not shave higher than the natural growth pattern unless the client requests it.

Trimming: comb the beard in the growth direction, trim with clippers or scissors over a comb, and work from the longest guard to the shortest.

Edging: use a trimmer or razor to define the lines; keep the blade angle shallow and use short strokes to avoid nicks.

Moustache: trim above the upper lip and at the corners; keep it symmetric and clear of the mouth for comfort.

Finishing: apply beard oil or balm, brush to distribute product, and show the client how to maintain the shape at home.

Shampoo selection: match the shampoo to hair type and scalp condition; clarifying for buildup, moisturizing for dry hair, medicated for dandruff.

Lathering: apply shampoo to the scalp, massage with fingertips, and work lather through the hair; rinse until the water runs clear.

Water temperature: warm water opens the cuticle and lifts oil; cool water closes the cuticle and adds shine; hot water irritates the scalp.

Scalp massage: use light, circular motions from the hairline to the crown; avoid pressure on the temples and neck.

Conditioning: apply conditioner to mid-shaft and ends, leave on for the recommended time, and rinse thoroughly to avoid buildup.

Scalp treatments: use medicated or moisturizing treatments according to the condition; patch test when the product label requires it.

Contraindications: do not shampoo over open sores, recent chemical burns, or active infections; refer to a physician.

After shampoo: towel dry gently, comb with a wide-tooth comb, and style; avoid rubbing the hair with a towel, which causes friction and breakage.

Blunt cut: cut at 0° elevation with a stationary guide; creates a solid line and maximum weight at the perimeter.

Graduated cut: cut at 45° elevation; builds weight at the perimeter and shorter layers above.

Layered cut: cut at 90° or higher elevation; removes weight and creates movement.

Long layers: cut at 135° elevation; keeps length while adding movement at the ends.

Uniform layers: cut at 90° elevation; all layers are the same length and create volume.

Texturizing: point cutting, notching, and thinning shears soften lines and remove bulk; use sparingly on fine hair.

Cross-checking: comb the hair in the opposite direction and check the outline; verify balance against the nose, ears, and jaw.

Clipper cutting: use guards and cut against the growth direction only for a closer cut; keep blades cool and oiled.

Scope of practice: barbers may cut, shampoo, shave, trim beards, and perform chemical services; services outside the scope require additional licensure.

Licensure: barbers, apprentices, shops, and instructors are licensed; apprentices must work under a licensed barber's supervision.

Sanitation rules: implements must be cleaned and disinfected between clients; single-use items must be discarded; hand-washing facilities must be available.

Shop rules: the shop must be clean, well-lit, and ventilated; licenses must be posted; a licensed barber must be on duty.

Advertising: no false or misleading advertising; prices must be posted and honored.

Discipline: the Board may fine, suspend, or revoke a license for violations, including unlicensed practice and sanitation failures.

Renewal: licenses renew on the Board's cycle; late renewal may require a fee and continuing education; check current rules.

Inspection: Board inspectors may inspect shops during business hours; cooperate and correct violations promptly.

Confidentiality: client information, health conditions, and photos are private; do not share without written permission.

Informed consent: explain the service, risks, and alternatives before chemical services; document the client's agreement.

Boundaries: maintain a professional relationship; avoid personal discussions that make the client uncomfortable.

Hygiene: arrive clean, wear clean attire, keep hands and tools clean, and avoid eating or phone use on the floor.

Punctuality: start appointments on time, manage the schedule, and inform clients of delays.

Complaints: listen, apologize for the experience, document the issue, and offer a remedy within shop policy.

Teamwork: respect coworkers, share sanitation duties, and communicate about client needs.

Continuing education: stay current on products, techniques, and Board rules; track CE hours and renewal dates.

Skull bones: frontal, parietal, temporal, occipital, zygomatic, maxilla, and mandible; the occipital bone forms the back of the head.

Facial muscles: frontalis (forehead), temporalis (temple), masseter (chewing), orbicularis oculi (eye), orbicularis oris (mouth), and buccinator (cheek).

Neck muscles: sternocleidomastoid (turns the head) and platysma (tenses the neck); these are landmarks for shaving and massage.

Nerves: the facial nerve controls facial expression; the trigeminal nerve provides sensation to the face; avoid pressure on nerve points.

Blood vessels: the temporal artery runs along the temple; the carotid artery is in the neck; avoid deep pressure over these areas.

Glands: parotid (near the ear), submandibular, and sublingual salivary glands; sebaceous glands secrete sebum.

Lymph nodes: located in the neck and behind the ear; swollen nodes may indicate infection and warrant referral.

Skin layers: epidermis, dermis, and subcutaneous layer; the dermis contains hair follicles, glands, and blood vessels.

Hair shaft layers: cuticle (outer scales), cortex (bulk, melanin), and medulla (core, absent in fine hair).

Follicle structure: the root, bulb, dermal papilla, and sebaceous gland; the papilla supplies nutrients.

Growth cycle: anagen (growth), catagen (transition), and telogen (rest); shedding 50-100 hairs daily is normal.

Melanin: eumelanin (brown/black) and pheomelanin (red/yellow); gray hair results from decreased melanin production.

Hair texture: fine, medium, and coarse; density is the number of strands per square inch; porosity is the ability to absorb moisture.

Elasticity: healthy hair stretches and returns; low elasticity indicates damage and contraindicates chemical services.

Scalp types: normal, oily, dry, and combination; identify before selecting shampoo and treatments.

Contraindications: open lesions, infections, and recent chemical burns; refer to a physician when in doubt.

Preparation: warm towel and lather soften the beard; apply lather in the direction of growth.

Razor angle: about 30° to the skin; use short, light strokes and rinse the blade after each stroke.

Direction: shave with the grain first; against-the-grain passes increase irritation and ingrown hair risk.

Skin tension: hold the skin taut ahead of the razor; shave the neck upward and the face downward.

Finishing: cool towel to close pores, styptic for nicks, and moisturizer to soothe the skin.

Contraindications: acne, razor bumps, open sores, sunburn, and recent chemical peels.

Sanitation: single-use blades in a sharps container; disinfect the razor handle between clients.

Aftercare: advise the client to avoid touching the shaved area and to use a soothing balm.

Patch test: apply a small amount behind the ear or inner elbow 24-48 hours before color; a positive reaction contraindicates the service.

Strand test: test the product on a small section to determine processing time and result before applying to the whole head.

Gloves and protection: wear gloves, protect the client's skin and clothing, and keep chemicals off the scalp where possible.

Ventilation: use products in a well-ventilated area; avoid inhaling fumes and keep containers closed.

Timing: follow the manufacturer's processing time exactly; do not exceed it even if the desired result is not reached.

Rinsing: rinse thoroughly with cool water; shampoo only when the manufacturer directs.

Emergency: rinse chemical burns immediately with cool water and refer to a physician if severe.

Documentation: record the products used, timing, and patch test results in the client's record.

Shears: keep sharp, oil the pivot, and never cut paper; dull shears pull hair and cause split ends.

Clippers: brush out hair, oil blades, and disinfect between clients; detachable blades must be cleaned and disinfected.

Razors: straight razors must be stropped and honed; disposable blades are single-use and discarded in a sharps container.

Combs and brushes: wash with soap and water, then disinfect for the label contact time; remove hair before disinfecting.

Cap and foiling tools: clean and disinfect after each use; foils and cap hooks are single-use when they contact the scalp.

Linens: use once per client, wash in hot water, and store clean linens separately.

Electrical safety: inspect cords, keep equipment away from water, and unplug before cleaning.

Inventory: track blades, gloves, disinfectant, and chemicals; reorder before stockouts.

Licensing: obtain a shop license, pass inspection, and post licenses; a licensed barber must be on duty.

Physical requirements: adequate lighting, ventilation, hot and cold water, a hand-washing sink, and cleanable surfaces.

Recordkeeping: keep client records, chemical and patch test records, employee licenses, and sanitation logs.

Employment: verify licenses before hiring and keep copies on file; apprentices must be supervised.

Insurance: professional liability and general liability coverage protect against claims.

Marketing: advertise only licensed services and avoid false or misleading claims.

Financial basics: track cost per service, set prices to cover supplies, rent, and labor, and review margins monthly.

Exit and transfer: notify the Board of ownership or location changes; a new owner needs a new shop license.

Cleaning: removes visible soil with soap and water; does not kill pathogens.

Sanitizing: reduces pathogens on surfaces to a safe level; use an EPA-registered product with the label contact time.

Disinfecting: destroys most pathogens on hard, non-porous surfaces; use a hospital-grade product labeled for bloodborne pathogens.

Sterilizing: destroys all microbial life including spores; use an autoclave, dry heat, or chemical sterilant.

Single-use items: towels, neck strips, cotton, emery boards, and wooden sticks cannot be disinfected and must be discarded.

Blood spills: wear gloves, clean, disinfect with a tuberculocidal product, and seal contaminated waste.

Hand washing: soap and water for at least 20 seconds; sanitizer is a fallback, not a substitute.

Sharps: place used blades in a puncture-resistant, labeled sharps container.

Color levels 1-10: 1 black to 10 lightest blonde; identify the natural level before formulating.

Developer volumes: 10 vol deposits, 20 vol lifts 1 level, 30 vol lifts 2-3 levels, 40 vol lifts 3-4 levels.

Underlying pigment: red, red-orange, orange, orange-yellow, yellow, and pale yellow are exposed when lifting.

Neutralization: opposite colors cancel (blue cancels orange, violet cancels yellow, green cancels red).

Patch and strand tests: required before color services; record results.

Application: retouch on new growth only; virgin application to mid-shaft and ends first, then scalp area.

Lightener: lifts natural pigment; do not apply over previously colored hair without a strand test.

Toning: demi-permanent or semi-permanent color neutralizes warmth after lightening; toners deposit only.

Perm chemistry: reducing agent breaks disulfide bonds; neutralizer rebuilds them in the new shape.

Rod size: smaller rods create tighter curls; wrap hair perpendicular to the rod for uniform curl.

Test curl: determines processing time; check every 5-10 minutes and do not exceed the manufacturer's maximum.

Neutralizer: hydrogen peroxide or sodium bromate; leave on for the full recommended time.

Relaxer chemistry: sodium hydroxide or guanidine hydroxide straightens by breaking disulfide bonds; neutralizer stops the action.

Retouch: apply relaxer only to new growth; overlapping causes breakage and scalp burns.

Chemical burns: rinse immediately with cool water and refer to a physician if severe.

Aftercare: wait 48-72 hours before shampooing, use sulfate-free products, and schedule a follow-up trim.

Regulatory body: the Kentucky Board of Barbering under KRS Chapter 317 licenses barbers, apprentices, shops, and instructors.

Licensure: complete an approved program (commonly 1,500 hours) and pass the written and practical exams; verify current hours with the Board.

Shop license: apply, pay the fee, pass inspection, and post the license; a licensed barber must be on duty.

Sanitation rules: clean and disinfect implements between clients, discard single-use items, and provide hand-washing facilities.

Advertising: no false or misleading claims; prices must be posted and honored.

Discipline: the Board may fine, suspend, or revoke licenses for violations.

Renewal: licenses renew on the Board's cycle; late renewal may require a fee and continuing education.

Inspection: Board inspectors may inspect shops during business hours; cooperate and correct violations.

Confidentiality: client information and photos are private; do not share without written permission.

Informed consent: explain the service, risks, and alternatives before chemical services.

Boundaries: maintain a professional relationship and avoid personal discussions that make clients uncomfortable.

Hygiene: arrive clean, wear clean attire, keep hands and tools clean, and avoid phone use on the floor.

Punctuality: start appointments on time and inform clients of delays.

Complaints: listen, document, and offer a remedy within shop policy.

Teamwork: respect coworkers, share sanitation duties, and communicate about client needs.

Continuing education: stay current on products, techniques, and Board rules.

Skull bones: frontal, parietal, temporal, occipital, zygomatic, maxilla, and mandible.

Facial muscles: frontalis, temporalis, masseter, orbicularis oculi, orbicularis oris, and buccinator.

Neck muscles: sternocleidomastoid and platysma; landmarks for shaving and massage.

Nerves: facial nerve controls expression; trigeminal nerve provides sensation to the face.

Blood vessels: temporal artery along the temple; carotid artery in the neck; avoid deep pressure.

Glands: parotid, submandibular, and sublingual salivary glands; sebaceous glands secrete sebum.

Lymph nodes: neck and behind the ear; swollen nodes may indicate infection.

Skin layers: epidermis, dermis, and subcutaneous layer; the dermis contains follicles and glands.

Hair shaft layers: cuticle, cortex, and medulla; the cortex contains melanin.

Follicle structure: root, bulb, dermal papilla, and sebaceous gland.

Growth cycle: anagen, catagen, and telogen; shedding 50-100 hairs daily is normal.

Melanin: eumelanin (brown/black) and pheomelanin (red/yellow); gray hair results from decreased melanin.

Texture and density: fine, medium, and coarse; density is strands per square inch.

Porosity: ability to absorb moisture; low porosity resists moisture and chemicals.

Elasticity: healthy hair stretches and returns; low elasticity contraindicates chemical services.

Scalp types: normal, oily, dry, and combination; identify before selecting products.

Scalp analysis: check for lesions, redness, flakes, and parasites before shampooing.

Water temperature: warm water opens the cuticle; cool water closes it; hot water irritates the scalp.

Shampoo selection: clarifying for buildup, moisturizing for dry hair, medicated for dandruff.

Lathering: apply to the scalp, massage with fingertips, and rinse until the water runs clear.

Conditioning: apply to mid-shaft and ends, leave on for the recommended time, and rinse thoroughly.

Scalp massage: light, circular motions from the hairline to the crown; avoid pressure on the temples.

Contraindications: open sores, recent chemical burns, and active infections require referral.

After shampoo: towel dry gently, comb with a wide-tooth comb, and style.

Blunt cut: 0° elevation with a stationary guide; creates a solid line and maximum weight.

Graduated cut: 45° elevation; builds weight at the perimeter and shorter layers above.

Layered cut: 90° or higher elevation; removes weight and creates movement.

Long layers: 135° elevation; keeps length while adding movement at the ends.

Texturizing: point cutting, notching, and thinning shears soften lines and remove bulk.

Cross-checking: comb in the opposite direction and check the outline for balance.

Clipper cutting: use guards and cut against the growth direction only for a closer cut.

Sectioning: horizontal sections build weight; vertical sections build graduation; diagonal sections blend.

Preparation: warm towel and lather soften the beard; apply lather in the direction of growth.

Razor angle: about 30° to the skin; use short, light strokes and rinse the blade after each stroke.

Direction: shave with the grain first; against-the-grain passes increase irritation.

Skin tension: hold the skin taut ahead of the razor; shave the neck upward and the face downward.

Beard design: neckline just above the Adam's apple; cheek line follows natural growth.

Trimming: comb in the growth direction and trim with clippers or scissors over a comb.

Finishing: cool towel, styptic for nicks, and beard oil or balm.

Sanitation: single-use blades in a sharps container; disinfect the razor handle between clients.

Perm chemistry: reducing agent breaks disulfide bonds; neutralizer rebuilds them.

Rod size: smaller rods create tighter curls; wrap hair perpendicular to the rod.

Test curl: determines processing time; check every 5-10 minutes.

Relaxer chemistry: sodium hydroxide or guanidine hydroxide straightens by breaking disulfide bonds.

Retouch: apply relaxer only to new growth; overlapping causes breakage.

Color levels 1-10: identify the natural level before formulating.

Developer volumes: 10 vol deposits, 20 vol lifts 1 level, 30 vol lifts 2-3 levels, 40 vol lifts 3-4 levels.

Patch and strand tests: required before color services; record results.

Regulatory body: Kentucky Board of Barbering under KRS Chapter 317.

Licensure: complete an approved program and pass written and practical exams; verify current hours with the Board.

Shop license: apply, pay the fee, pass inspection, and post the license.

Sanitation rules: clean and disinfect implements between clients and discard single-use items.

Advertising: no false or misleading claims; prices must be posted.

Discipline: the Board may fine, suspend, or revoke licenses.

Renewal: licenses renew on the Board's cycle; late renewal may require a fee.

Inspection: Board inspectors may inspect shops during business hours.

Confidentiality: client information and photos are private.

Informed consent: explain the service, risks, and alternatives before chemical services.

Hygiene: arrive clean, wear clean attire, and keep hands and tools clean.

Punctuality: start appointments on time and inform clients of delays.

Complaints: listen, document, and offer a remedy within shop policy.

Teamwork: respect coworkers and share sanitation duties.

Continuing education: stay current on products, techniques, and Board rules.

Financial basics: track cost per service and set prices to cover supplies, rent, and labor.

Skull bones: frontal, parietal, temporal, occipital, zygomatic, maxilla, and mandible.

Facial muscles: frontalis, temporalis, masseter, orbicularis oculi, orbicularis oris, and buccinator.

Neck muscles: sternocleidomastoid and platysma.

Nerves: facial nerve controls expression; trigeminal nerve provides sensation.

Blood vessels: temporal artery and carotid artery; avoid deep pressure.

Glands: parotid, submandibular, and sublingual salivary glands; sebaceous glands secrete sebum.

Hair shaft layers: cuticle, cortex, and medulla.

Growth cycle: anagen, catagen, and telogen; shedding 50-100 hairs daily is normal.

Contagious conditions: ringworm, impetigo, scabies, lice, and conjunctivitis; do not service and refer.

Non-contagious conditions: dandruff, seborrheic dermatitis, psoriasis, and contact dermatitis.

Hair loss types: androgenetic alopecia, alopecia areata, telogen effluvium, and traction alopecia.

Hair shaft disorders: split ends, knotted hair, and brittle hair.

Skin lesions: primary (macule, papule, pustule, vesicle, wheal) and secondary (crust, scale, scar, ulcer).

Pigmentation disorders: hyperpigmentation, hypopigmentation, vitiligo, and albinism.

Glands: sebaceous glands secrete sebum; sudoriferous glands secrete sweat.

Referral: sudden hair loss, painful lesions, and suspected infections require medical referral.

Know the format: written theory and practical performance tests; confirm passing scores with the Board.

Study by domain: sanitation, hair and scalp, cutting, shaving, chemical services, anatomy, law, and management.

Practice practical procedures with sanitation steps narrated and timed.

Memorize key numbers: pH values, developer volumes, growth cycle phases, and color levels.

Use scenario questions: choose the safest, most client-centered action.

Keep an error log and re-test weak areas weekly.

Read the full question and watch for absolutes like 'always' and 'never'.

Answer every question; there is no penalty for guessing.

Shop license: apply to the Board, pay the fee, pass inspection, and post the license.

Physical requirements: adequate lighting, ventilation, hot and cold water, and a hand-washing sink.

Recordkeeping: keep client records, chemical and patch test records, and sanitation logs.

Employment: verify licenses before hiring and keep copies on file.

Insurance: professional liability and general liability coverage.

Marketing: advertise only licensed services and avoid false claims.

Financial basics: track cost per service and review margins monthly.

Exit and transfer: notify the Board of ownership or location changes.

Bloodborne pathogens: hepatitis B, hepatitis C, and HIV; transmission requires contact with infected blood.

Standard precautions: treat all blood and body fluids as infectious and wear gloves when bleeding is possible.

Exposure incident: wash the area, flush mucous membranes, report, and seek medical evaluation.

Sharps: place used blades in a puncture-resistant, labeled sharps container.

Contaminated waste: seal blood-soaked items in a labeled bag.

Disinfectant: use an EPA-registered hospital-grade product with a tuberculocidal claim.

Gloves: change between clients and never reuse disposable gloves.

Vaccination: hepatitis B vaccination is recommended for barbers.

Color wheel: primary, secondary, and tertiary colors; complementary colors neutralize.

Levels 1-10: 1 black to 10 lightest blonde.

Underlying pigment: red, red-orange, orange, orange-yellow, yellow, and pale yellow.

Formulation: mix color and developer in the manufacturer's ratio.

Application: retouch on new growth only; virgin application to mid-shaft and ends first.

Lightener: lifts natural pigment; do not apply over previously colored hair without a strand test.

Toning: demi-permanent or semi-permanent color neutralizes warmth.

Correction: correct in stages and re-evaluate elasticity between steps.

Perm procedure: shampoo, section, wrap rods, apply lotion, test curl, rinse, neutralize, and style.

Rod size and wrap: smaller rods create tighter curls; wrap perpendicular to the rod.

Processing time: check a test curl every 5-10 minutes.

Neutralizer: hydrogen peroxide or sodium bromate; leave on for the full time.

Relaxer procedure: shampoo, apply base, section, apply relaxer, smooth, process, rinse, neutralize.

Retouch: apply relaxer only to new growth.

Chemical burns: rinse with cool water and refer if severe.

Aftercare: wait 48-72 hours before shampooing and use sulfate-free products.

Beard shapes: full beard, goatee, Van Dyke, chinstrap, mutton chops, and extended goatee.

Face shape: round faces suit longer, angular beards; long faces suit fuller, shorter beards.

Neckline: just above the Adam's apple, following the jaw curve.

Cheek line: follow natural growth unless the client requests otherwise.

Trimming: comb in the growth direction and trim over a comb.

Edging: use a trimmer or razor with short strokes to avoid nicks.

Moustache: trim above the lip and at the corners; keep it symmetric.

Finishing: apply beard oil or balm and brush to distribute.

Shampoo selection: match to hair type and scalp condition.

Lathering: apply to the scalp, massage with fingertips, and rinse until clear.

Water temperature: warm water opens the cuticle; cool water closes it.

Scalp massage: light, circular motions from the hairline to the crown.

Conditioning: apply to mid-shaft and ends and rinse thoroughly.

Scalp treatments: use medicated or moisturizing products as indicated.

Contraindications: open sores, chemical burns, and infections require referral.

After shampoo: towel dry gently and comb with a wide-tooth comb.

Blunt cut: 0° elevation with a stationary guide.

Graduated cut: 45° elevation; builds weight at the perimeter.

Layered cut: 90° or higher elevation; removes weight.

Long layers: 135° elevation; keeps length and adds movement.

Texturizing: point cutting, notching, and thinning shears.

Cross-checking: comb in the opposite direction and check balance.

Clipper cutting: use guards and cut against the growth direction for a closer cut.

Sectioning: horizontal, vertical, and diagonal sections control shape.

Scope of practice: cutting, shampooing, shaving, beard trimming, and chemical services.

Licensure: barbers, apprentices, shops, and instructors are licensed.

Sanitation: clean and disinfect implements between clients.

Shop rules: clean, well-lit, and ventilated; licenses posted.

Advertising: no false or misleading claims.

Discipline: fines, suspension, or revocation for violations.

Renewal: licenses renew on the Board's cycle.

Inspection: inspectors may inspect during business hours.

Confidentiality: client information and photos are private.

Informed consent: explain the service, risks, and alternatives.

Boundaries: maintain a professional relationship.

Hygiene: arrive clean and keep tools clean.

Punctuality: start on time and inform clients of delays.

Complaints: listen, document, and offer a remedy.

Teamwork: respect coworkers and share sanitation duties.

Continuing education: stay current on products and rules.

Skull bones: frontal, parietal, temporal, occipital, zygomatic, maxilla, and mandible.

Facial muscles: frontalis, temporalis, masseter, orbicularis oculi, orbicularis oris, and buccinator.

Neck muscles: sternocleidomastoid and platysma.

Nerves: facial nerve and trigeminal nerve.

Blood vessels: temporal artery and carotid artery.

Glands: parotid, submandibular, and sublingual salivary glands.

Lymph nodes: neck and behind the ear.

Skin layers: epidermis, dermis, and subcutaneous layer.

Hair shaft layers: cuticle, cortex, and medulla.

Follicle structure: root, bulb, dermal papilla, and sebaceous gland.

Growth cycle: anagen, catagen, and telogen.

Melanin: eumelanin and pheomelanin.

Texture and density: fine, medium, and coarse; strands per square inch.

Porosity: ability to absorb moisture.

Elasticity: healthy hair stretches and returns.

Scalp types: normal, oily, dry, and combination.

Preparation: warm towel and lather soften the beard.

Razor angle: about 30° to the skin.

Direction: shave with the grain first.

Skin tension: hold the skin taut ahead of the razor.

Finishing: cool towel, styptic, and moisturizer.

Contraindications: acne, razor bumps, open sores, and sunburn.

Sanitation: single-use blades in a sharps container.

Aftercare: avoid touching the shaved area and use a soothing balm.

Patch test: apply behind the ear or inner elbow 24-48 hours before color.

Strand test: test the product on a small section before the full application.

Gloves and protection: wear gloves and protect the client's skin and clothing.

Ventilation: use products in a well-ventilated area.

Timing: follow the manufacturer's processing time exactly.

Rinsing: rinse thoroughly with cool water.

Emergency: rinse chemical burns immediately and refer if severe.

Documentation: record products, timing, and patch test results.

Shears: keep sharp, oil the pivot, and never cut paper.

Clippers: brush out hair, oil blades, and disinfect between clients.

Razors: straight razors must be stropped and honed; disposable blades are single-use.

Combs and brushes: wash, then disinfect for the label contact time.

Cap and foiling tools: clean and disinfect after each use.

Linens: use once per client and wash in hot water.

Electrical safety: inspect cords and keep equipment away from water.

Inventory: track blades, gloves, disinfectant, and chemicals.

Licensing: obtain a shop license, pass inspection, and post licenses.

Physical requirements: lighting, ventilation, hot and cold water, and a hand-washing sink.

Recordkeeping: keep client records and sanitation logs.

Employment: verify licenses before hiring.

Insurance: professional liability and general liability coverage.

Marketing: advertise only licensed services.

Financial basics: track cost per service and review margins monthly.

Exit and transfer: notify the Board of ownership or location changes.