AR Barber flashcards
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32 cards. Read the term and the definition here. The deck at the top of this page is optional.
- Cuticle
- The outermost layer of the hair shaft, made of overlapping scales that protect the inner layers and control how much moisture and chemicals enter the hair.
- Cortex
- The middle layer of the hair shaft, containing melanin and disulfide bonds; it gives hair its strength, elasticity, and color.
- Anagen phase
- The active growth phase of the hair cycle, during which cells in the follicle divide rapidly and the hair shaft lengthens.
- pH scale
- A 0-14 scale measuring acidity or alkalinity; 7 is neutral, below 7 is acidic, and above 7 is alkaline.
- Pathogenic bacteria
- Microorganisms that cause disease in humans; they can spread through contact with blood, body fluids, or contaminated implements.
- Disinfectant
- An EPA-registered chemical product that kills most microorganisms on hard, nonporous surfaces and implements when used at the label's contact time.
- Sterilization
- The process that destroys all microbial life, including bacterial spores, and is required for items that pierce or cut the skin.
- Standard precautions
- Infection-control practices that treat all blood and body fluids as potentially infectious, requiring gloves and proper handling procedures.
- SDS
- The Safety Data Sheet, a document that describes a chemical product's hazards, safe handling, storage, and first-aid measures.
- Porosity
- The hair's ability to absorb and retain moisture; low porosity resists absorption, while high porosity absorbs quickly and may need gentler treatment.
- Elasticity
- The hair's ability to stretch and return to its original length; normal hair stretches up to about 50 percent of its length.
- Sebum
- An oily substance produced by the sebaceous glands that lubricates the hair and scalp and helps maintain the skin's acid mantle.
- Pityriasis
- A common scalp condition characterized by flaking and dandruff; medicated shampoo may help control the symptoms.
- Hair density
- The number of hairs per square inch on the scalp; density is separate from texture, which describes the thickness of individual hairs.
- Elevation
- The angle at which hair is held away from the head during a haircut; it determines the length and shape of the finished style.
- Blunt cut
- A haircut in which all hair is cut at one length with zero elevation, creating a solid, straight perimeter line.
- Clipper guard
- An attachment that controls the length of hair left by clippers; smaller numbers cut closer to the scalp than larger numbers.
- Razor angle
- The angle at which a razor is held against the skin during shaving, typically about 30 degrees, to cut hair without injuring skin.
- Neckline
- The lower boundary of a beard design, positioned above the Adam's apple to create a natural-looking beard shape.
- Texturizing shears
- Special shears with notched blades that remove bulk and create movement without changing the overall length of the hair.
- Hair color levels
- A numbering system from 1 (black) to 10 (lightest blonde) that describes the lightness or darkness of natural or artificial hair color.
- Developer volume
- The strength of hydrogen peroxide used in hair color; higher volumes lift more natural pigment, from 10 volume (deposit only) to 40 volume.
- Law of color
- The principle that primary colors (red, yellow, blue) combine to form secondary colors, and complementary colors neutralize each other on the color wheel.
- Patch test
- A small application of a chemical product to the skin, performed 24-48 hours before service, to check for an allergic reaction.
- Relaxer
- A chemical service that uses sodium hydroxide or ammonium thioglycolate to break disulfide bonds and straighten curly or tightly coiled hair.
- Consultation
- A pre-service conversation that identifies the client's goals, hair history, lifestyle, and any contraindications before performing a service.
- Contraindication
- A condition such as scalp abrasions, allergies, or recent chemical services that makes a proposed service inadvisable or unsafe.
- Client record
- Documentation of services performed, products used, timing, and any reactions, kept for future reference and legal protection.
- Informed consent
- The client's agreement to a service after being told the expected results, potential risks, and alternatives in clear language.
- Scope of practice
- The set of services a licensed barber is legally permitted to perform under state law; services outside it must be referred elsewhere.
- Licensure
- The state-issued credential that permits a barber to practice; it must be renewed according to the state's renewal cycle and requirements.
- Blood spill procedure
- The protocol for cleaning blood-contaminated surfaces using gloves and an EPA-registered disinfectant, following the establishment's exposure control plan.