AZ Barber key terms

The angle at which a section of hair is lifted away from the head before cutting. Cutting at low elevation builds weight; cutting at high elevation removes weight and creates layers.

The first section of hair cut in a service, which establishes the length and shape that the rest of the haircut follows. It may stay in place or travel with each section.

Cutting hair a second time from a direction opposite the original cuts to expose uneven strands. It improves balance and smoothness before the style is finished.

A gradual shortening of hair toward the neckline and around the ears while length is kept on top. It is a standard finish for clipper cuts and short scissor cuts.

A clipper cut that blends from very short or bare skin at the hairline up to longer hair on top, with no visible lines. Fades are described as low, mid, or high.

A plastic or metal attachment fitted over clipper blades that sets how much hair is left behind. Higher guard numbers leave longer hair.

Removing visible hair, dirt, and product from tools, hands, and surfaces with soap or detergent and water. Cleaning always comes before disinfection or sterilization.

Using an EPA-registered product on nonporous tools and surfaces to destroy or reduce harmful organisms. It does not reliably destroy bacterial spores, so it is not the same as sterilization.

A process that destroys all microbial life, including spores, typically using steam, heat, or pressure. It is reserved for items that contact broken skin or blood.

Treating every client's blood and body fluids as potentially infectious and using gloves, barriers, and hand washing accordingly. The approach applies to all clients regardless of appearance or known health status.

A manufacturer document that lists a product's hazards, safe handling, first-aid measures, and storage needs. Shops keep one available for each chemical product on the premises.

Contact of broken skin, eyes, or mucous membranes with blood or other potentially infectious material. It calls for immediate washing, reporting, and any follow-up the shop policy requires.

A device that sterilizes tools with high-pressure steam. Tools must be cleaned and dried first, and items are packaged or cycled according to the manufacturer's instructions.

Drawing a straight razor across a leather strop to realign and polish the blade edge. Stropping maintains an edge that has already been formed by honing.

Grinding a straight razor blade against a sharpening stone to restore its bevel and cutting edge. It is done far less often than stropping and removes metal from the blade.

A straight-razor stroke in which the cutting hand moves forward across taut skin while the other hand holds the skin steady. It is commonly used on the right side of the face.

A straight-razor stroke performed with the hand turned so the blade travels in the opposite direction from a freehand stroke. It is used on the left side of the face and neck.

Razor bumps caused when tightly curled hair is cut short and grows back into the skin, producing inflammation. Shaving against the grain increases the risk of developing it.

Shaving in the direction opposite to hair growth. It gives the closest result but raises the risk of irritation and ingrown hairs, so it is usually a final pass.

Placing a small amount of a coloring product on the skin and waiting 24 to 48 hours to see whether an allergic reaction develops. A positive reaction means the service must not proceed.

Applying the intended chemical product to a small cutting of hair to check timing, result, and condition before the full service. It guides formula choice and processing time.

A hydrogen peroxide solution that supplies the oxygen needed for color to deposit or for pigment to lighten. Its strength is stated as a volume, such as 20 volume.

A strong alkaline product that straightens curly or tightly coiled hair by breaking disulfide bonds. Lye versions use sodium hydroxide; no-lye versions rely on other alkalizing agents.

A low-pH product applied after a relaxer or permanent wave to stop the chemical action and rebuild the hair's bonds. Skipping or shortening it leaves hair weak and prone to breaking.

A two-step service that reshapes hair into curls or waves. A reducing agent breaks disulfide bonds while the hair is wound on rods, then a neutralizer re-forms them.

The state body that licenses barbers, barber shops, and barber schools in Arizona and enforces the barbering statutes and rules. It also handles complaints and discipline.

A credential issued by the state that allows a person to practice barbering. Performing services without a current license, or in an unlicensed shop, is a violation.

A route to an Arizona license for a barber already licensed in another state whose training and examination requirements are accepted as equivalent. The Board reviews the application and may require extra steps.

The set of services a licensed barber may legally perform, as defined by state statute and rules. Working outside that scope can result in discipline or loss of the license.

How readily hair absorbs and holds moisture, based on the condition of the cuticle. Low-porosity hair resists moisture; high-porosity hair takes it in and loses it quickly.

The ability of wet hair to stretch and return to its original length without breaking. Poor elasticity warns that the hair may not tolerate chemical or heat services.

A scale from 0 to 14 that measures acidity and alkalinity, with 7 being neutral. Skin and hair prefer mildly acidic products, while strongly alkaline products swell the cuticle.

A molecule with a water-attracting end and an oil-attracting end that lifts oils and debris so water can rinse them away. Surfactants are the cleansing agents in shampoo.

A light, gliding massage movement made with the palms and fingers. It is used to open and close a facial massage and to spread product evenly over the skin.

A kneading movement that lifts, squeezes, and rolls muscle and soft tissue. It is applied after the tissue is warmed and is used to release tightness.

Quick, rhythmic tapping, cupping, or hacking strokes made with the fingertips or the edges of the hands. It is used briefly to stimulate circulation and should never be painful.

A condition that makes a service unsafe or inadvisable, such as broken skin, active infection, or recent surgery. Barbers screen for these during consultation and refer when needed.

Explaining what a service involves, its risks, and the likely result, then confirming the client agrees to proceed. It protects both the client and the barber.

A conversation before the service in which the barber learns the client's goals, hair history, and health restrictions, then agrees on a plan and price.

A written or electronic record of services performed, products and formulas used, and any reactions observed. It supports consistency on return visits and documents the care given.