CA Cosmetology study materials
CA Cosmetology study resources

CA Cosmetology key terms

CA Cosmetology · Get comfortable with the vocabulary.

Disinfection

A process that uses an EPA-registered product to destroy most disease-causing microorganisms on hard, nonporous surfaces and implements, but not necessarily bacterial spores.

Related: Sterilization, Sanitation, Cross-Contamination
Sterilization

A process that completely destroys all microbial life, including bacterial spores, on an object; in a salon this usually means cleaning items and then heating them in an autoclave.

Related: Autoclave, Disinfection
Sanitation

Cleaning with soap or detergent and water to remove visible dirt, debris, and many microorganisms from surfaces and tools, lowering the risk of spreading infection.

Related: Disinfection, Hand Washing
Pathogen

A microorganism such as a bacterium, virus, or fungus that can cause disease in humans; proper hand washing and disinfection help reduce its spread.

Related: Bacteria, Virus, Bloodborne Pathogens
Bacteria

Single-celled microorganisms that can reproduce quickly; some are harmless, while others cause skin infections such as folliculitis or staph infections.

Related: Pathogen, Virus
Virus

A tiny infectious agent that can reproduce only inside a living host cell; viruses such as HIV and hepatitis B are not killed by antibiotics.

Related: Pathogen, Bloodborne Pathogens
Bloodborne Pathogens

Infectious microorganisms carried in blood and other body fluids that can cause disease, including hepatitis B, hepatitis C, and HIV.

Related: Universal Precautions, Virus
Universal Precautions

A safety practice of treating all blood, body fluids, and potentially contaminated materials as if they carry infectious disease, using gloves and other barriers.

Related: Bloodborne Pathogens, Hand Washing
Safety Data Sheet (SDS)

A standardized document, formerly called an MSDS, that gives safety, handling, storage, and first-aid information for a chemical product; keep one for each product in the salon.

Related: OSHA
OSHA

The Occupational Safety and Health Administration, a federal agency that sets and enforces workplace safety rules, including hazard communication and bloodborne pathogen standards.

Related: Safety Data Sheet (SDS), Bloodborne Pathogens
EPA

The Environmental Protection Agency, a federal agency that registers disinfectants and determines which products may legally be labeled as hospital-grade disinfectants.

Related: Disinfection
Autoclave

A device that uses steam under pressure to sterilize metal implements and other heat-resistant items after they have been cleaned and dried.

Related: Sterilization, Disinfection
Cross-Contamination

The transfer of pathogens from one person, surface, or object to another, often through shared tools, unwashed hands, or dirty linens.

Related: Disinfection, Hand Washing, Sanitation
Hand Washing

The most important infection-control step: using soap and warm running water, scrubbing hands and wrists for at least 20 seconds, then drying with a clean towel.

Related: Sanitation, Universal Precautions
Ergonomics

The study of designing tools, workstations, and tasks to fit the worker's body, reducing strain and helping prevent repetitive-motion injuries.

Related: OSHA
California Board of Barbering and Cosmetology

The state agency that licenses and regulates cosmetologists, barbers, estheticians, manicurists, electrologists, and salons in California.

Related: Cosmetology License, Establishment License, Inspection
Cosmetology License

A California credential that allows a person to perform hair, skin, and nail services after completing required training and passing the state board examination.

Related: California Board of Barbering and Cosmetology, Scope of Practice
Establishment License

A license issued by the California board that permits a salon or shop to operate and offer cosmetology services at a specific location.

Related: California Board of Barbering and Cosmetology, Inspection
Scope of Practice

The specific services and procedures a licensed professional is legally allowed to perform under their license type; working outside it is illegal.

Related: Cosmetology License, Esthetician License, Manicurist License
Esthetician License

A California license that allows a person to perform skin care services such as facials, waxing, and makeup application, but not hair or nail services.

Related: Scope of Practice, Client Consultation
Manicurist License

A California license that permits a person to perform nail care services on hands and feet, including manicures and pedicures, under health and safety rules.

Related: Scope of Practice, Manicure, Pedicure
Health and Safety Rules

California regulations that set sanitation, disinfection, and facility requirements for licensed salons and professionals; violations can lead to fines or license action.

Related: Disinfection, Inspection
Inspection

An official visit by the board or its representative to a salon to check licensing, sanitation, and compliance with health and safety rules.

Related: Health and Safety Rules, Establishment License
Unprofessional Conduct

Behavior by a licensee that violates board rules or professional standards, such as unsafe practices, working outside scope, or impaired practice; it can lead to discipline.

Related: Scope of Practice, Inspection
Booth Rental

An arrangement in which a licensed professional rents space in a salon and works as an independent contractor rather than as an employee of the salon.

Related: Establishment License
Client Consultation

A conversation before a service in which the professional asks about the client's goals, health history, and preferences, then explains options and possible risks.

Related: Patch Test, Hair Analysis
Hair Analysis

Examining a client's hair for texture, density, porosity, and elasticity to choose appropriate cutting, coloring, or chemical services.

Related: Porosity, Elasticity
Porosity

The ability of hair to absorb and hold moisture or chemicals; low porosity resists absorption, while high porosity absorbs quickly and may be fragile.

Related: Hair Analysis, Elasticity
Elasticity

The ability of hair to stretch and return to its original length without breaking; good elasticity indicates healthy hair with strong protein bonds.

Related: Porosity, Disulfide Bonds
pH Scale

A scale from 0 to 14 that measures acidity or alkalinity; hair and skin are slightly acidic, and products with high pH can swell and damage hair.

Related: Relaxer, Hair Color
Disulfide Bonds

Strong chemical bonds that give hair its shape and strength; permanent waves and relaxers work by breaking and re-forming these bonds.

Related: Permanent Wave, Relaxer
Permanent Wave

A chemical service that uses reducing and neutralizing solutions to break and rebuild disulfide bonds, adding curl or wave to the hair.

Related: Disulfide Bonds, pH Scale
Relaxer

A chemical product, usually highly alkaline, that straightens curly or wavy hair by breaking disulfide bonds; it requires careful timing and scalp protection.

Related: Disulfide Bonds, pH Scale
Developer

A hydrogen peroxide solution mixed with hair color to lighten the hair and help color molecules enter the cortex; its strength is measured in volumes.

Related: Hair Color
Hair Color

A product or service that changes hair color by depositing pigment, lightening natural pigment, or both; a patch test helps check for allergic reactions.

Related: Developer, Patch Test
Patch Test

A small skin test, usually behind the ear or on the inner elbow, to check for an allergic reaction to a product such as hair color before a full service.

Related: Hair Color, Client Consultation
Pedicure

A cosmetic service for the feet and toenails that includes soaking, shaping, cuticle care, and polishing; foot spas must be cleaned and disinfected properly.

Related: Manicure, Disinfection
Manicure

A cosmetic service for the hands and nails that includes shaping, cuticle care, massage, and polishing, following sanitation rules for tools and soaking.

Related: Pedicure, Disinfection