AL Master Barber study materials
AL Master Barber study resources

AL Master Barber key terms

AL Master Barber · Get comfortable with the vocabulary.

Disinfection

The process of killing or reducing harmful microorganisms on tools and surfaces using an EPA-registered product, short of destroying all bacterial spores. It is the standard level of protection required for most barber implements between clients.

Related: Sterilization, EPA-Registered Disinfectant, Bloodborne Pathogens
Sterilization

A process that destroys all microbial life, including bacterial spores, usually through steam under pressure in an autoclave or by dry heat. It is required for implements that may contact blood or penetrate the skin.

Related: Disinfection, Autoclave
EPA-Registered Disinfectant

A product carrying an Environmental Protection Agency registration number and label claims for killing specific organisms on hard, nonporous surfaces. The label directions for contact time and dilution must be followed exactly to be effective.

Related: Disinfection, Contact Time
Contact Time

The length of time an implement must stay fully submerged or wet with a disinfectant for the product to work as labeled. Cutting this time short means the tool is not properly disinfected.

Related: EPA-Registered Disinfectant, Disinfection
Bloodborne Pathogens

Disease-causing microorganisms carried in blood or body fluids, such as hepatitis B, hepatitis C, and HIV. Barbers must follow standard precautions and OSHA rules to prevent exposure from clients and contaminated tools.

Related: Standard Precautions, Sharps Container, Exposure Incident
Standard Precautions

An approach in which all blood and certain body fluids are treated as potentially infectious regardless of the client's known health status. It includes gloves, handwashing, and proper handling of contaminated items.

Related: Bloodborne Pathogens, Exposure Incident
Exposure Incident

A specific event in which a barber's skin, eyes, or mucous membranes contact blood or other potentially infectious material, such as a nick from a razor. The incident must be reported and documented per the shop's exposure control plan.

Related: Bloodborne Pathogens, Standard Precautions
Sharps Container

A rigid, puncture-resistant, leakproof container with a biohazard label used to discard used razor blades and other sharp items. It must not be overfilled and is never used for general trash.

Related: Bloodborne Pathogens
Autoclave

A device that sterilizes tools using high-pressure steam at elevated temperature. Items must be cleaned first and properly packaged or placed per the manufacturer's instructions to achieve sterilization.

Related: Sterilization
Porous vs. Nonporous Implements

Nonporous items such as metal shears, combs, and clipper blades can be disinfected or sterilized. Porous items like cloth towels, neck strips, and wooden handles cannot be reliably disinfected and should be single-use or laundered.

Related: Disinfection, Single-Use Item
Single-Use Item

A product designed to be used on one client and then discarded, such as a straight razor blade, wooden manicure stick, or neck strip. It is never cleaned and reused.

Related: Porous vs. Nonporous Implements
Tinea Capitis

A contagious fungal infection of the scalp and hair shafts, often seen as scaly patches and broken hairs. It is a contraindication to chemical and certain styling services and requires medical referral.

Related: Contraindication, Pediculosis
Pediculosis

An infestation of lice on the scalp or hair. It is highly contagious, so service must be refused and the client referred for treatment; tools and linens require special handling.

Related: Tinea Capitis, Contraindication
Contraindication

A condition or circumstance that makes a service unsafe or inadvisable for a client. Examples include open sores, infectious scalp disease, or a history of allergic reaction to a product.

Related: Tinea Capitis, Patch Test
Patch Test

A small amount of a chemical product applied to the skin to check for an allergic reaction before a full service. Results are read after a set waiting period, and a positive reaction means the product must not be used.

Related: Contraindication, Developer
Hair Porosity

The hair's ability to absorb and hold moisture, related to how tightly the cuticle layers lie. Highly porous hair absorbs chemicals quickly and may process faster, while low-porosity hair resists absorption.

Related: Cuticle Layer, Strand Test
Strand Test

A test performed on a small section of hair before a chemical service to predict how the hair will respond to a product. It helps determine processing time, strength, and whether the service is safe to perform.

Related: Hair Porosity, Processing Time
Cuticle Layer

The outermost layer of the hair shaft, made of overlapping scale-like cells that protect the inner layers. Its condition determines shine, porosity, and how chemicals penetrate the hair.

Related: Hair Porosity, Cortex
Cortex

The middle and thickest layer of the hair shaft, containing the pigment granules and most of the hair's strength and elasticity. Chemical services change the hair by acting on the cortex.

Related: Cuticle Layer, Medulla
Medulla

The innermost, usually hollow core of the hair shaft, which may be absent in fine hair. It contributes little to the hair's strength or appearance.

Related: Cortex
Growth Pattern

The direction in which hair grows from the scalp, including whorls and cowlicks. It affects how hair falls and must be considered when cutting and styling to avoid gaps or uneven lengths.

Related: Elevation
Elevation

The angle at which hair is held away from the head while cutting. Lower elevation builds weight and length; higher elevation removes weight and creates layers and graduation.

Related: Graduation, Growth Pattern
Graduation

A cutting technique where hair lengths build from shorter at the perimeter to longer toward the interior, creating a stacked or wedge effect. It is controlled by elevation and sectioning.

Related: Elevation
Guideline

The first cut section of hair that establishes the length and shape the remaining hair follows. A missing or incorrect guideline causes an uneven haircut.

Related: Elevation
Razor Cutting

Cutting or texturing hair with a straight razor or razor comb to create soft, tapered ends and blended texture. It requires a sharp blade and controlled angle to avoid removing too much hair.

Related: Stropping, Honing
Honing

The process of grinding and sharpening a straight razor blade on a stone to restore a cutting edge. It is followed by stropping to polish and align the edge.

Related: Stropping, Razor Cutting
Stropping

The process of polishing and straightening a straight razor's edge by drawing it across a leather strop. It is done before shaving to make the blade glide smoothly and cut cleanly.

Related: Honing
Shaving Lather

A mixture of shaving soap or cream and water whipped to a creamy consistency that softens the beard and protects the skin. Proper lather reduces friction and irritation during shaving.

Related: Shaving Angle
Shaving Angle

The angle at which the razor blade meets the skin, generally kept low to shave close without scraping. The wrong angle causes razor burn, nicks, or an incomplete shave.

Related: Shaving Lather
Ingrown Hair

A hair that curls back into the skin or grows sideways, causing inflammation and sometimes infection. Close shaving and improper technique can contribute, and clients should be advised on prevention.

Related: Shaving Angle
Beard Grain

The natural direction in which facial hair grows. Trimming and shaving with the grain reduces irritation, and mapping the grain is essential for an even beard line.

Related: Shaving Angle, Ingrown Hair
Developer

A hydrogen peroxide solution that, when mixed with hair color or lightener, supplies the oxygen needed to develop color and lift pigment. Its strength, stated in volume, controls the amount of lift.

Related: Patch Test, Processing Time
Processing Time

The period a chemical product is left on the hair to complete its reaction. It is set by the manufacturer and the strand test, and exceeding it can cause damage or unwanted results.

Related: Strand Test, Developer
Relaxer

A chemical product that straightens curly or textured hair by breaking and reforming bonds in the cortex. Proper strength selection and timing are critical to avoid scalp burns and hair breakage.

Related: Processing Time, Cortex
Skin Barrier

The outermost protective layer of the skin, which limits water loss and blocks irritants and microorganisms. Damaged skin is more vulnerable to chemical burns and infection during services.

Related: Cuticle Layer
Sanitation

The basic practice of keeping the work area, hands, and tools clean and free of visible soil, often through washing and low-level cleaning. It is the foundation before disinfection or sterilization.

Related: Disinfection, Sterilization
Exposure Control Plan

A written shop document required under OSHA rules that describes how the business protects workers from bloodborne pathogens. It covers training, protective equipment, vaccination, and procedures after an exposure incident.

Related: Exposure Incident, Bloodborne Pathogens
Alabama Board of Cosmetology and Barbering

The state agency that licenses barbers, barber shops, and instructors and enforces Alabama's sanitation and practice rules. Candidates should know its licensing, inspection, and disciplinary authority.

Related: Shop License, Continuing Education
Shop License

A permit issued by the state board allowing a barber shop to operate legally. The shop must meet sanitation, equipment, and facility requirements and is subject to inspection.

Related: Alabama Board of Cosmetology and Barbering
Continuing Education

Required training hours that licensees must complete to renew their license, including sanitation and safety topics. Failing to complete them can delay or prevent renewal.

Related: Shop License
Record Keeping

Maintaining required documents such as client service records, chemical records, and sanitation logs. Accurate records protect both the client and the shop and may be requested during inspections.

Related: Exposure Control Plan, Shop License