Washington Cosmetology License Exam — All Questions

In a salon, which level of decontamination is required for multi-use (reusable) implements such as metal shears and combs that have not touched blood or body fluids?

• a.Cleaning with soap and water only, then air drying
• b.Cleaning to remove debris, followed by complete immersion in an EPA-registered disinfectant✓
• c.Sterilization in an autoclave before every client
• d.Wiping with a plain damp towel between clients

There are three levels of decontamination: sanitation (lowest, reduces germs), disinfection (kills most pathogens on hard nonporous surfaces), and sterilization (highest, destroys all microbial life). Multi-use implements must first be cleaned to remove visible debris and then fully immersed in an EPA-registered disinfectant for the manufacturer's stated contact time. Cleaning alone does not kill pathogens, and salons generally are not required to autoclave/sterilize implements that have not contacted blood.

What does an EPA registration on a salon disinfectant label indicate?

• a.The product has been approved by the FDA for use on human skin
• b.The product is a natural, chemical-free cleaner
• c.The product's manufacturer has demonstrated its effectiveness against specific pathogens to the U.S. Environmental Protection Agency✓
• d.The product only needs to touch the surface briefly to work

Disinfectants used on hard, nonporous salon surfaces and implements must be EPA-registered. EPA registration means the manufacturer submitted efficacy data proving the product kills the pathogens named on the label (for example, bactericidal, virucidal, and fungicidal claims). The label also states the required contact (dwell) time, which must be followed for the product to work. The EPA regulates surface disinfectants; the FDA regulates products applied to the body.

MRSA (methicillin-resistant Staphylococcus aureus) is of particular concern in salons primarily because it is a bacterium that:

• a.Is resistant to many common antibiotics and can spread through skin contact or shared implements✓
• b.Can only be transmitted through contaminated food
• c.Is a fungus that affects only the nails
• d.Is completely harmless to healthy adults

MRSA is a strain of Staphylococcus aureus bacteria that has become resistant to many antibiotics that once treated it, making infections harder to cure. It can spread through direct skin contact or by sharing contaminated implements and towels. This is exactly why strict cleaning and disinfection of implements between every client is essential in the salon.

If a client is accidentally cut and blood appears during a service, the correct procedure is to:

• a.Continue the service and clean up afterward
• b.Reuse the implement after wiping it on a towel
• c.Blow on the wound to stop the bleeding
• d.Stop the service, put on gloves, clean and bandage the injury, and clean and disinfect any contaminated implements and surfaces (double-bagging contaminated waste)✓

A blood spill requires following Universal (Standard) Precautions, which treat all blood and body fluids as potentially infectious. Stop the service, put on gloves, stop the bleeding and cover the wound, then clean and disinfect any implements or surfaces that contacted blood, and dispose of contaminated single-use materials in a properly sealed (often double-bagged) container. Implements exposed to blood should be disinfected with a product effective against bloodborne pathogens (HIV and hepatitis B/C).

Which layer of the hair shaft contains the melanin (pigment) and makes up most of the hair's strength and elasticity?

• a.The cuticle
• b.The cortex✓
• c.The medulla
• d.The follicle

The hair shaft has three layers. The cuticle is the tough outer layer of overlapping scales that protects the strand. The cortex is the thick middle layer that contains melanin (natural pigment) and the bonds responsible for most of the hair's strength, elasticity, and its response to chemical services like color and perms. The medulla is the soft, often absent core. The follicle is the skin structure that surrounds the root, not a layer of the shaft.

During a haircut, the term 'elevation' refers to:

• a.The direction in which the hair naturally grows
• b.The amount of tension applied while combing
• c.The angle at which the hair is lifted or held from the head before cutting✓
• d.The height of the styling chair

Elevation (also called projection) is the angle at which a subsection of hair is lifted away from the head before it is cut. Zero elevation (held at 0 degrees, straight down) produces a blunt, one-length or heavier line; 90-degree elevation builds layers; and 180 degrees creates long, graduated layering. Controlling elevation, along with the cutting line/angle, is how a stylist creates weight, graduation, and layers.

The three phases of the hair growth cycle, in order, are:

• a.Anagen (growth), catagen (transition), telogen (rest)✓
• b.Telogen (growth), anagen (rest), catagen (transition)
• c.Catagen (growth), telogen (transition), anagen (rest)
• d.Anagen (rest), telogen (growth), catagen (shedding)

Hair grows in a repeating cycle of three phases. Anagen is the active growth phase, during which the hair is actively produced and can last several years. Catagen is the brief transition phase, when growth stops and the follicle begins to shrink. Telogen is the resting phase, at the end of which the hair sheds and a new anagen phase begins. Most scalp hair is in the anagen phase at any given time.

A client with very fine, thin hair wants more apparent volume. Which cutting approach generally helps create the illusion of fullness?

• a.Removing weight aggressively with heavy thinning throughout
• b.Using layering and blunt lines to build volume and a strong perimeter rather than over-thinning✓
• c.Cutting all hair at zero elevation only, keeping maximum length
• d.Slide-cutting every section to remove as much density as possible

Fine or thin hair already lacks density, so aggressively thinning or removing weight makes it look even sparser. A blunt perimeter keeps the appearance of density at the ends, while controlled layering can build height and volume. The goal is to preserve and shape existing density, not strip it away. Matching the cutting technique to the client's hair type is a core styling fundamental.

On the pH scale, a product with a pH of 9 is:

• a.Neutral, the same as pure water
• b.Acidic
• c.Alkaline, which tends to swell and open the hair cuticle✓
• d.So acidic it will dissolve the hair instantly

The pH scale runs from 0 to 14; 7 is neutral (pure water). Values below 7 are acidic, and values above 7 are alkaline (basic). A pH of 9 is alkaline. Alkaline products soften and swell the hair and raise the cuticle, which is why permanent color, lighteners, and alkaline (cold) waves are alkaline — they need the cuticle open to work. Acidic products (like many conditioners and toners) contract and smooth the cuticle. The scale is logarithmic, so each whole number is a tenfold change.

In permanent (oxidative) haircolor, what is the primary role of hydrogen peroxide (the developer)?

• a.It provides oxygen to develop the color molecules and lift natural pigment✓
• b.It neutralizes the color so it will not fade
• c.It acidifies the mixture to close the cuticle
• d.It removes the need for a patch test

Permanent haircolor is an oxidation process. Hydrogen peroxide acts as the oxidizing agent (developer): it releases oxygen that both lightens (lifts) the hair's natural melanin and triggers the small color precursor molecules to combine into larger colored molecules trapped inside the cortex. Higher developer volumes (for example 20 vs. 10 volume) provide more oxygen and more lift. The alkaline ammonia in the color swells the cuticle so the developer and dyes can enter.

Which statement correctly contrasts a thioglycolate (acid/true-acid or cold-wave 'thio') perm with a hydroxide chemical hair relaxer?

• a.Both use exactly the same chemistry and are interchangeable on any hair
• b.Thio perms are permanent while hydroxide relaxers wash out in one shampoo
• c.Hydroxide relaxers can be neutralized back with thioglycolate and reused as a perm
• d.Thio perms break and reform disulfide bonds and are neutralized/re-oxidized, while hydroxide relaxers break disulfide bonds by a different (non-reversible) reaction and are neutralized by rinsing and an acid-balanced shampoo, not re-oxidized✓

Ammonium thioglycolate (thio) waving breaks the hair's disulfide bonds by reduction; the hair is molded, then an oxidizing neutralizer rebuilds the bonds in the new shape. Hydroxide relaxers (sodium, potassium, lithium, or 'no-lye' guanidine hydroxide) straighten by a different, non-reversible chemical reaction (lanthionization) that permanently breaks disulfide bonds; they are stopped by thorough rinsing plus an acid-balanced neutralizing shampoo, not by an oxidizing neutralizer. Critically, thio and hydroxide chemistries are not compatible on the same hair and must never be layered without careful transition.

Before applying an oxidative (aniline-derivative) permanent haircolor, a predisposition test is performed to check for allergy. This test is known as the:

• a.Strand test
• b.Patch (predisposition) test✓
• c.Porosity test
• d.Elasticity test

A patch (predisposition) test is applied to the skin (behind the ear or inside the elbow) 24 to 48 hours before an aniline-derivative color service to detect an allergic reaction; a red, itchy, or swollen response is a positive reaction, and the service should not be performed. Do not confuse it with a strand test, which is done on a section of hair to preview the actual color result, timing, and the hair's condition — not to check for allergy.

The outermost layer of the skin, the one estheticians and cosmetologists work on most directly, is the:

• a.Epidermis✓
• b.Dermis
• c.Subcutaneous (adipose) layer
• d.Stratum papillare

The skin has three main layers. The epidermis is the thin outermost layer (its surface is the stratum corneum) and is where most surface skin-care and exfoliation work occurs. Beneath it is the dermis, the thicker living layer containing blood vessels, nerves, hair follicles, and sweat and oil glands. Deepest is the subcutaneous (adipose) layer of fatty tissue that provides insulation and contour.

A comedo (plural comedones), commonly seen in acne-prone skin, is best described as:

• a.A contagious viral wart
• b.A raised, fluid-filled blister
• c.A hair follicle impacted with keratinized cells and sebum (a blackhead is an open comedo; a whitehead is closed)✓
• d.An area of increased pigmentation from sun exposure

A comedo is a follicle that has become plugged with sebum (oil) and dead keratinized cells. When the plug is exposed to air at the surface it oxidizes and darkens, forming an open comedo, or blackhead. When it is covered by skin it stays light and forms a closed comedo, or whitehead. Comedones are a hallmark of acne and are a disorder of the sebaceous (oil) glands, not an infection or a pigmentation change.

During a basic facial, why is a cleansing step performed before applying treatment products or a mask?

• a.To immediately close the pores so nothing can penetrate
• b.To remove makeup, oil, and surface debris so the skin is clean and later products can work effectively✓
• c.Because products can only be applied to completely dry, unwashed skin
• d.To permanently remove the skin's acid mantle

Cleansing is the foundational first step of a facial. Removing makeup, excess oil, sweat, and environmental debris leaves a clean surface so that subsequent steps — exfoliation, massage, treatment products, and masks — can perform as intended and penetrate more effectively. Cleansing does not permanently strip the skin's protective acid mantle; a well-formulated cleanser respects it.

The visible part of the nail that rests on the nail bed is called the nail plate. What is the term for the crescent-shaped, lighter area at the base of the nail?

• a.The free edge
• b.The eponychium
• c.The hyponychium
• d.The lunula✓

The lunula is the whitish, half-moon shape at the base of the nail; it is the visible part of the matrix, where nail cells are produced. The free edge is the part of the nail plate that extends past the fingertip. The eponychium is the living skin (cuticle area) at the base overlapping the plate, and the hyponychium is the skin beneath the free edge. Knowing nail anatomy helps a nail technician work safely without injuring living tissue.

A nail technician should understand the difference between a nail disorder and a nail disease. Which of the following can generally be serviced in the salon?

• a.A nail with signs of active infection, swelling, pus, or inflammation
• b.A noninfectious cosmetic disorder such as ridges or discoloration with no signs of infection✓
• c.A nail with a suspected fungal infection (onychomycosis)
• d.An inflamed, infected area around the nail (paronychia)

A general safety rule: if a nail or skin shows signs of infection or inflammation — redness, swelling, pus, heat, or a suspected fungal or bacterial infection — the client should be referred to a physician and the service should not be performed. Noninfectious cosmetic disorders (such as harmless ridges, minor discoloration, or brittleness) with no signs of infection can usually be worked on and improved cosmetically. When in doubt, do not service and refer out.

To prevent the spread of infection between clients during manicures and pedicures, a nail technician must:

• a.Reuse disposable files and buffers on the next client if they look clean
• b.Rinse metal implements under water only between clients
• c.Discard single-use (porous) items after one client and clean then disinfect reusable implements in an EPA-registered disinfectant✓
• d.Disinfect the foot basin only at the end of the week

Porous, single-use items such as nail files, buffers, and wooden pushers cannot be properly disinfected and must be discarded after one client. Reusable, nonporous metal implements must be cleaned to remove debris and then immersed in an EPA-registered disinfectant for the required contact time. Pedicure foot basins/spas are a known source of infection and must be cleaned and disinfected after every client, following the manufacturer's and regulatory procedures.

Which bone forms the forehead and the upper part of the eye sockets?

• a.The frontal bone✓
• b.The mandible
• c.The zygomatic bone
• d.The occipital bone

The frontal bone forms the forehead and the upper portion of the eye sockets. The mandible is the lower jaw (the only movable bone of the skull), the zygomatic bones are the cheekbones, and the occipital bone forms the back and lower part of the skull. Knowing head and facial bones helps cosmetologists understand facial shape and the underlying structure during facials and massage.

Trichology is the scientific study of:

• a.The nails and their disorders
• b.The bones of the face and skull
• c.The hair and its diseases and care✓
• d.The muscles of the neck and shoulders

Trichology is the branch of science that deals with the hair, its structure, functions, and diseases (from the Greek 'trichos,' meaning hair). Understanding trichology helps cosmetologists analyze scalp and hair conditions, recognize when a condition should be referred to a physician, and choose appropriate services. The study of the nails is onychology, and the study of the skin is dermatology.

During a scalp or facial massage, the cosmetologist is stimulating muscles and nerves. Which is the largest of the muscles that the cosmetologist should be aware of covers the back of the neck and upper back and moves the head and shoulders?

• a.The orbicularis oculi
• b.The trapezius✓
• c.The frontalis
• d.The masseter

The trapezius is a large muscle covering the back of the neck and upper/middle back; it moves the shoulders and helps move the head. The orbicularis oculi is the ring muscle that closes the eye, the frontalis is the front portion of the epicranius that raises the eyebrows, and the masseter is a chewing muscle of the jaw. Awareness of these muscles guides safe, effective massage movements during scalp and facial services.

The seventh cranial nerve, which is the chief motor nerve of the face and is important during facial massage, is the:

• a.Trifacial (trigeminal) nerve
• b.Ulnar nerve
• c.Cervical nerve
• d.Facial nerve✓

The facial nerve is the seventh (7th) cranial nerve and is the chief motor nerve of the face; it controls the muscles of facial expression. The trifacial (trigeminal), the fifth cranial nerve, is the chief sensory nerve of the face and also serves the chewing muscles. The ulnar and cervical nerves serve the arm/hand and neck region respectively. Understanding facial nerves helps a cosmetologist locate motor points and perform beneficial massage.

An emulsion, such as a typical hair conditioner or hand cream, is best defined as:

• a.A mixture of two or more immiscible liquids (such as oil and water) united with the help of an emulsifier✓
• b.A pure element that cannot be broken down
• c.A single liquid dissolved completely into a gas
• d.A metal dissolved in another metal

An emulsion is a physical mixture of two or more immiscible (unblendable) substances, typically oil and water, held together by an emulsifier (surfactant) that keeps the droplets suspended. Common salon products are oil-in-water (O/W) or water-in-oil (W/O) emulsions. This is a physical mixture, not a pure element or a true solution of a solid dissolving completely; understanding emulsions helps explain how creams, lotions, and conditioners are formulated and behave.

In facial and scalp treatments that use electrotherapy, galvanic current differs from faradic current in that galvanic current is:

• a.A rapidly alternating current used mainly to produce heat
• b.A high-frequency current used to sanitize the skin with sparks
• c.A constant, direct current used to produce chemical (and ionic) reactions such as iontophoresis✓
• d.The same as household outlet current with no modification

Galvanic current is a constant, direct current (flowing in one direction) used to create chemical changes in the skin and to drive water-soluble products into or out of the skin (iontophoresis: desincrustation and iontophoresis). Faradic current is an alternating, interrupted current used to cause muscle contractions (for toning). High-frequency (Tesla) current is a separate modality. Modalities in electrotherapy must be understood and used safely and only where permitted.

In the pH scale used throughout cosmetology chemistry, a change from pH 6 to pH 4 represents:

• a.The solution becoming more alkaline
• b.The solution becoming 100 times more acidic, because the scale is logarithmic✓
• c.Only a small, insignificant change of two units
• d.No change in acidity at all

The pH scale is logarithmic, so each whole-number step is a tenfold change in acidity or alkalinity. Moving from pH 6 to pH 4 is a drop of two units, which means the solution becomes 10 x 10 = 100 times more acidic. Lower numbers are more acidic and higher numbers are more alkaline. This logarithmic nature is why small pH numbers on product labels represent large real differences in how a product affects the hair and skin.

A Safety Data Sheet (SDS), formerly called an MSDS, is an important salon document because it:

• a.Lists the retail price of each professional product
• b.Records each client's service history
• c.Certifies that a product is organic
• d.Provides safety information about a product, including its ingredients, hazards, safe handling, storage, and emergency/first-aid measures✓

A Safety Data Sheet (SDS) is supplied by the product manufacturer and provides critical safety information: the product's hazardous ingredients, associated health and physical hazards, safe handling and storage, personal protective equipment, and first-aid and emergency procedures. Salons should keep SDS documents accessible for the professional products they use. This is a worker-safety and right-to-know requirement, not a pricing or client-record document.

'Salon ecology' and good professional practice most directly refer to:

• a.Only recycling paper in the break room
• b.The color scheme used to decorate the salon
• c.Maintaining a clean, safe, and healthy salon environment through proper cleaning, disinfection, ventilation, and safe handling of products✓
• d.The salon's social media marketing strategy

In cosmetology, salon ecology refers to keeping the salon environment clean, safe, and healthy for both clients and staff. This includes proper cleaning and disinfection of tools and surfaces, good ventilation to manage fumes and dust, safe storage and handling of chemicals, and following infection-control procedures. It is a core professional responsibility, distinct from decor or marketing choices.

Which of the following best reflects professional ethics for a cosmetologist?

• a.Being honest with clients, respecting confidentiality, and recommending only services and products the client genuinely needs✓
• b.Recommending the most expensive service regardless of the client's needs to maximize the ticket
• c.Sharing a client's personal information with other clients as conversation
• d.Guaranteeing medical cures for scalp or skin conditions

Professional ethics means acting with honesty and integrity: telling clients the truth about what a service can realistically achieve, keeping client information confidential, and recommending only the services and retail products the client actually needs rather than upselling for its own sake. Cosmetologists must also stay within their scope and never diagnose or promise to cure medical conditions, referring clients to a physician when appropriate.

Which state agency issues cosmetology licenses in Washington?

• a.The Washington State Department of Health
• b.The Washington State Department of Licensing (DOL)✓
• c.A private cosmetology board with no state connection
• d.The county auditor's office

Washington administers cosmetology, barbering, esthetics, and manicuring licenses through the Department of Licensing (DOL). DOL issues the credentials, sets rules with its advisory board, and enforces standards statewide.

Under Washington law, when may a person perform cosmetology services for compensation?

• a.Only after obtaining the appropriate DOL-issued license for those services✓
• b.As soon as they enroll in cosmetology school
• c.Any time, because Washington does not license cosmetology
• d.Whenever a licensed coworker is present, with no license needed

Washington prohibits practicing cosmetology for pay without the proper DOL license. A candidate must complete required training and pass required examinations before DOL issues a license authorizing paid practice.

Which statement best reflects how Washington structures beauty credentials?

• a.A single universal license covers every service with no distinctions
• b.Only salon owners need a license
• c.Washington issues distinct credentials — for example cosmetologist, barber, esthetician, master esthetician, and manicurist — each with its own scope✓
• d.Cosmetology licenses are issued only by individual cities

DOL issues separate credentials, including cosmetologist, barber, esthetician, master esthetician, and manicurist, plus salon/shop and instructor credentials. Washington's distinct 'master esthetician' license authorizes a broader scope than a standard esthetician. A practitioner must hold the license matching their services.

What does Washington require for the salon or shop location?

• a.Nothing; only the individuals are licensed
• b.Only a federal registration
• c.A one-time verbal notice with no standards
• d.A separate salon/shop license and compliance with DOL sanitation and safety rules✓

Washington requires the salon or shop to be licensed and to meet sanitation and safety standards, in addition to the individual licenses of the people working there. Facilities may be inspected, and owners must maintain compliant conditions.

How does a Washington cosmetology license remain valid?

• a.It is permanent once issued
• b.It must be renewed with DOL before it expires✓
• c.It renews only if the licensee changes salons
• d.It is valid nationwide without any renewal

Washington licenses are issued for a set term and must be renewed through DOL before expiration; an expired license cannot be used to practice legally until renewed. Exact renewal cycles and fees are set by DOL and should be verified there.

Which of the following is a prohibited practice that DOL can act on?

• a.Performing services outside your license's scope or practicing without a license✓
• b.Disinfecting shears between clients
• c.Renewing your license on time
• d.Discarding used files after one client

Unlicensed practice, out-of-scope services, and sanitation violations are grounds for DOL enforcement, which can include penalties or license restriction. Staying in scope, renewing on time, and following sanitation rules keep a licensee in good standing.

A nail file, buffer, or wooden orangewood stick has been used on one client. What do Washington rules require next?

• a.Disinfect it and reuse it on the next client
• b.Wash it with soap and water and keep using it
• c.Discard it — porous, single-use items cannot be disinfected and must not be reused✓
• d.Store it in a UV drawer to sterilize it for reuse

Porous and disposable items — nail files, buffers, orangewood/cuticle sticks, disposable wax applicators, and similar — absorb moisture and cannot be reliably disinfected. Washington rules require these to be used on one client and then thrown away. Only non-porous, cleanable implements may be disinfected and reused.

During a service a client is nicked and bleeds. What is the correct exposure-incident response expected by the Washington State Department of Licensing (DOL)?

• a.Stop, put on gloves and give basic first aid, then clean and disinfect any surfaces and tools that contacted blood and discard contaminated single-use items in a lined container✓
• b.Continue the service and clean up afterward
• c.Reuse the tool on the next client since the blood was minor
• d.Rinse the tool under water and place it back in service immediately

Blood or body-fluid exposure triggers a defined procedure: stop the service, protect yourself with gloves, apply first aid, then clean and disinfect the workstation and any contaminated implements, and dispose of single-use contaminated materials properly. This limits transmission of bloodborne pathogens and is a core public-health duty enforced by the Washington State Department of Licensing (DOL).

Why do Washington sanitation standards prohibit re-dipping a used wax applicator back into the wax pot ('double-dipping')?

• a.It cools the wax too quickly
• b.It wastes product and slows the service
• c.It changes the color of the wax
• d.The applicator carries skin cells and microorganisms into the pot, contaminating the wax for every later client✓

Once a stick touches a client's skin it picks up bacteria and cells; returning it to the pot contaminates all remaining wax. A fresh applicator must be used for each withdrawal of wax. This single-use discipline is why double-dipping is treated as a sanitation violation.

How do Washington rules expect towels, capes, and other linens to be handled in a licensed salon?

• a.One towel per day is fine as long as it looks clean
• b.A clean towel/drape is used for each client, and soiled linens are stored in a closed/covered container away from clean supplies✓
• c.Used towels may be shaken out and reused on the next client
• d.Linens do not need laundering if only used for drying hands

Fresh, laundered linens must be provided for each client, and anything that has touched a client is 'soiled' until laundered. Clean and used linens must be kept separate, with soiled items in a covered receptacle. This prevents cross-contamination between clients.