CO Barber study guide
CO Barber · Work through your exam, one topic at a time.
A Colorado barber license is the credential that authorizes you to practice barbering in the state. Barbering is regulated by the Office of Barber and Cosmetology Licensure, part of the Division of Professions and Occupations within the Colorado Department of Regulatory Agencies (DORA). The CO Barber study guide has 4 sections and about 1,641 words.
01Scientific Concepts: Hair, Skin, Scalp, Chemistry, and Anatomy
Every hair has three layers: the cuticle (overlapping outer scales that protect and, when damaged, cause dullness and breakage), the cortex (the largest layer - about 90% of the hair - holding strength, elasticity, and melanin), and the medulla (the innermost core, sometimes absent in fine hair). Growth runs in a cycle: anagen (active growth, roughly 2–6 years), catagen (short transition, about 1–2 weeks), and telogen (resting/shedding, roughly 3–5 months).
343 words, about 2 min02Hair Care and Haircutting Services
Know the shampoo families - clarifying (removes buildup), balancing, moisturizing/hydrating, and medicated (scalp conditions, used only as directed) - and when a conditioner or scalp treatment is appropriate. Hair analysis before cutting covers texture, density, porosity, elasticity, growth pattern, and scalp condition.
324 words, about 2 min03Shaving, Facial Hair Design, and Client Services
Shaving is a service with real injury risk, so preparation matters: soften the beard with a warm towel and lather worked in with a brush in circular motions, then stretch the skin and keep the skin taut along the shaving pattern. The first pass goes with the grain ; a second pass across the grain may be used for a closer shave, but going fully against the grain on sensitive skin invites irritation and ingrown hairs.
671 words, about 3 min04Infection Control, Safety, and Business Practices
Know the pathogen groups - bacteria (cocci, bacilli, spirilla), viruses, fungi, and parasites - and that only some are harmful. Infection control has three levels: cleaning (soap and water, removes debris), disinfection (EPA-registered hospital-grade disinfectant, kills most pathogens on nonporous surfaces), and sterilization (autoclave, destroys all microbial life).
303 words, about 2 min