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WI Cosmetology study materials
WI Cosmetology study resources

WI Cosmetology practice questions

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Question 1Scientific Concepts (anatomy, physiology, chemistry, infection control)

The thin, outermost layer of the skin, which contains no blood vessels, is the:

  1. papillary layer
  2. dermis
  3. epidermis Correct answer.
  4. subcutaneous layer

Explanation

The epidermis is the outermost skin layer and is avascular, receiving nourishment by diffusion from the dermis below it. The layers beneath it contain the vessels, glands, and nerve endings.

Question 2Scientific Concepts (anatomy, physiology, chemistry, infection control)

The bone that forms the forehead and the upper part of the eye sockets is the:

  1. occipital bone
  2. frontal bone Correct answer.
  3. parietal bone
  4. temporal bone

Explanation

The frontal bone forms the forehead and the roof of the eye sockets. Each skull bone covers a specific region, which is why esthetic and massage work references them by name.

Question 3Scientific Concepts (anatomy, physiology, chemistry, infection control)

Which muscle covers the forehead and raises the eyebrows, causing horizontal wrinkles?

  1. orbicularis oculi
  2. frontalis Correct answer.
  3. masseter
  4. mentalis

Explanation

The frontalis muscle lies over the frontal bone and lifts the eyebrows, producing the forehead creases associated with expression. Muscles of the face are named for the area they cover or the action they perform.

Question 4Scientific Concepts (anatomy, physiology, chemistry, infection control)

Which nerve is the chief motor nerve of the face and controls facial expression?

  1. facial nerve Correct answer.
  2. ophthalmic nerve
  3. mandibular nerve
  4. trigeminal nerve

Explanation

The facial nerve is the seventh cranial nerve and supplies the muscles of facial expression. The trigeminal nerve is primarily the sensory nerve of the face.

Question 5Scientific Concepts (anatomy, physiology, chemistry, infection control)

A solution with a pH of 3 is best described as:

  1. mildly alkaline
  2. acidic Correct answer.
  3. strongly alkaline
  4. neutral

Explanation

The pH scale runs from 0 to 14, with 7 as neutral. Any value below 7 is acidic, and the lower the number, the stronger the acidity.

Question 6Scientific Concepts (anatomy, physiology, chemistry, infection control)

Bacteria that cause disease are called:

  1. saprophytic
  2. nonpathogenic
  3. aerobic
  4. pathogenic Correct answer.

Explanation

Pathogenic bacteria are the disease-causing group, while nonpathogenic bacteria are harmless or even beneficial. Infection control focuses on preventing transfer of pathogens.

Question 7Scientific Concepts (anatomy, physiology, chemistry, infection control)

The process that destroys all microbial life, including bacterial spores, is called:

  1. decontamination
  2. sanitation
  3. sterilization Correct answer.
  4. disinfection

Explanation

Sterilization is the highest level of microbial control and is the only process that reliably destroys spores. Disinfection and sanitation reduce organisms but do not guarantee spore destruction.

Question 8Scientific Concepts (anatomy, physiology, chemistry, infection control)

A substance made up of only one type of atom is a(n):

  1. element Correct answer.
  2. mixture
  3. solution
  4. compound

Explanation

An element consists of a single kind of atom that cannot be broken down chemically. Compounds contain two or more elements bonded together.

Question 9Scientific Concepts (anatomy, physiology, chemistry, infection control)

The small muscle attached to the base of each hair follicle is the:

  1. temporalis
  2. platysma
  3. arrector pili Correct answer.
  4. occipitalis

Explanation

The arrector pili is a tiny involuntary muscle that contracts in cold or emotional stress, causing goose bumps. Its attachment to the follicle is why the hair shaft stands upright.

Question 10Scientific Concepts (anatomy, physiology, chemistry, infection control)

The whitish, half-moon area at the base of the nail plate is the:

  1. hyponychium
  2. nail bed
  3. lunula Correct answer.
  4. free edge

Explanation

The lunula is the visible portion of the nail matrix, which appears pale because cells there have not yet fully keratinized. It sits at the proximal end of the nail plate.

Question 11Scientific Concepts (anatomy, physiology, chemistry, infection control)

In a surfactant molecule, the end that is attracted to water is described as:

  1. hydrophobic
  2. inert
  3. lipophilic
  4. hydrophilic Correct answer.

Explanation

Surfactants have a water-loving (hydrophilic) head and an oil-loving (lipophilic) tail, which lets them lift oils into water so they can be rinsed away. Shampoos rely on this dual nature to clean the hair.

Question 12Scientific Concepts (anatomy, physiology, chemistry, infection control)

A mixture of two liquids that do not normally mix, held together by an emulsifier, is a(n):

  1. suspension
  2. compound
  3. solution
  4. emulsion Correct answer.

Explanation

An emulsion blends two immiscible liquids, such as oil and water, by using an emulsifying agent to keep droplets dispersed. Lotions and creams are common emulsions in cosmetology.

Question 13Scientific Concepts (anatomy, physiology, chemistry, infection control)

Which mixture contains large particles that settle to the bottom when left standing?

  1. compound
  2. emulsion
  3. solution
  4. suspension Correct answer.

Explanation

In a suspension, particles are dispersed but not dissolved, so gravity pulls them out of the mixture over time. Calamine lotion is a familiar example that must be shaken before use.

Question 14Scientific Concepts (anatomy, physiology, chemistry, infection control)

The artery that supplies blood to the back of the head and scalp is the:

  1. superficial temporal artery
  2. carotid artery
  3. occipital artery Correct answer.
  4. facial artery

Explanation

The occipital artery branches from the external carotid and supplies the back of the head. Knowing scalp arteries helps a cosmetologist recognize normal blood supply during massage and shampoo services.

Question 15Scientific Concepts (anatomy, physiology, chemistry, infection control)

Small bean-shaped structures that filter lymph and help destroy bacteria and other foreign material are:

  1. capillaries
  2. sweat glands
  3. sebaceous glands
  4. lymph nodes Correct answer.

Explanation

Lymph nodes filter lymph as it travels through the lymphatic system and house white blood cells that attack pathogens. They are one of the body's key defenses against infection.

Question 16Scientific Concepts (anatomy, physiology, chemistry, infection control)

Endocrine glands release their hormones directly into the:

  1. lymph
  2. skin surface
  3. bloodstream Correct answer.
  4. digestive tract

Explanation

Endocrine glands are ductless and secrete hormones into the blood, which carries them to target tissues. Exocrine glands, by contrast, deliver their secretions through ducts.

Question 17Scientific Concepts (anatomy, physiology, chemistry, infection control)

Standard precautions require a cosmetologist to treat which of the following as potentially infectious?

  1. Only saliva
  2. Only blood that is clearly visible
  3. Only fluids from clients who appear ill
  4. All blood and body fluids Correct answer.

Explanation

Standard precautions apply to every client because a person can carry pathogens without visible symptoms. Treating all blood and body fluids as infectious is the core principle behind gloves and hand hygiene.

Question 18Scientific Concepts (anatomy, physiology, chemistry, infection control)

Which of these is transmitted mainly through contact with blood and other body fluids?

  1. pediculosis
  2. ringworm
  3. the common cold
  4. hepatitis B Correct answer.

Explanation

Hepatitis B is a bloodborne pathogen spread by blood and other body fluids, which is why standard precautions and proper disinfection matter in salons. The other conditions listed have different routes of transmission.

Question 19Scientific Concepts (anatomy, physiology, chemistry, infection control)

Implements that have contacted blood must first be cleaned and then disinfected with a product carrying which claim?

  1. A sanitizer-only claim
  2. A tuberculocidal claim Correct answer.
  3. A deodorizer claim
  4. A fungicidal claim

Explanation

Bloodborne pathogens require a disinfectant strong enough to kill the tougher organisms used as benchmarks, which is why a tuberculocidal claim is required. Cleaning first removes debris that would otherwise shield microbes and weaken the solution.

Question 20Scientific Concepts (anatomy, physiology, chemistry, infection control)

A solution with a pH above 7 will typically do which of the following to the hair?

  1. Leave the hair unchanged
  2. Smooth the cuticle and add shine
  3. Close the cuticle and harden the hair
  4. Swell the hair shaft Correct answer.

Explanation

Alkaline solutions raise the pH of the hair, causing the cuticle to lift and the shaft to swell. Acidic products have the opposite effect and tighten the cuticle.

Question 21Scientific Concepts (anatomy, physiology, chemistry, infection control)

A solution with a pH of 3 is how many times more acidic than a solution with a pH of 5?

  1. 2 times
  2. 100 times Correct answer.
  3. 20 times
  4. 1,000 times

Explanation

The pH scale is logarithmic, so each one-unit change represents a tenfold difference in acidity. A two-unit difference therefore equals ten times ten, or one hundred times.

Question 22Scientific Concepts (anatomy, physiology, chemistry, infection control)

In a permanent wave, the waving lotion works by:

  1. Coating the hair with a polymer film
  2. Adding hydrogen bonds to the hair
  3. Raising the pH to close the cuticle
  4. Breaking disulfide bonds in the cortex Correct answer.

Explanation

Waving lotion breaks the disulfide bonds that give hair its shape, allowing the hair to be wrapped into a new form. The neutralizer then rebuilds those bonds in the new position.

Question 23Scientific Concepts (anatomy, physiology, chemistry, infection control)

Which of the following is generally the most resistant to disinfectants?

  1. Gram-positive bacteria
  2. Enveloped viruses
  3. Bacterial spores Correct answer.
  4. Fungi

Explanation

Bacterial spores are dormant, highly protected forms that survive many disinfectants that readily kill vegetative bacteria, fungi, and enveloped viruses. This is why spore destruction is reserved for sterilization.

Question 24Scientific Concepts (anatomy, physiology, chemistry, infection control)

When acrylic monomer liquid is mixed with polymer powder, the hardening that results is best described as:

  1. An oxidation reaction
  2. A reduction reaction
  3. A neutralization reaction
  4. A polymerization reaction Correct answer.

Explanation

Monomer molecules link together into long chains during polymerization, creating the hard acrylic structure. The powder acts as a catalyst-containing polymer that speeds the reaction.

Question 25Scientific Concepts (anatomy, physiology, chemistry, infection control)

A cosmetologist finds the disinfectant in an implement jar is cloudy and contains debris. The best action is to:

  1. Strain it through a towel and continue using it
  2. Add more disinfectant concentrate to the jar
  3. Discard it and prepare a fresh solution Correct answer.
  4. Use it as long as it still smells like disinfectant

Explanation

Debris and cloudiness mean the solution is contaminated and may no longer be at effective strength, so it must be replaced. Implements should be cleaned and dried before immersion so the disinfectant stays effective.

Question 26Scientific Concepts (anatomy, physiology, chemistry, infection control)

The branch of science that deals with the structure of the human body and the relationship of its parts is called:

  1. anatomy Correct answer.
  2. physiology
  3. myology
  4. histology

Explanation

Anatomy is the study of body structure and how the parts relate to one another, while physiology studies how those parts function. Histology is the microscopic study of tissues, and myology is limited to the study of muscles. These basic terms form the vocabulary used throughout the study of hair, skin, and nails.

Question 27Scientific Concepts (anatomy, physiology, chemistry, infection control)

The skin is the body's largest:

  1. gland
  2. muscle
  3. organ Correct answer.
  4. membrane

Explanation

An organ is a structure composed of two or more kinds of tissue that performs a specific function, and the skin qualifies as the largest organ of the body. It contains glands, membranes, and even a tiny muscle at each follicle, but none of those individual structures is the skin itself.

Question 28Scientific Concepts (anatomy, physiology, chemistry, infection control)

On the pH scale, a solution with a pH of exactly 7 is:

  1. alkaline
  2. neutral Correct answer.
  3. slightly acidic
  4. strongly acidic

Explanation

The pH scale runs from 0 to 14 with 7 at the midpoint. Values below 7 are acidic, values above 7 are alkaline, and exactly 7 is neutral, as in pure water.

Question 29Scientific Concepts (anatomy, physiology, chemistry, infection control)

For legal sale and use in a salon, a disinfectant label must show which of the following?

  1. a state board seal of approval
  2. an FDA approval number
  3. an EPA registration number Correct answer.
  4. an OSHA permit number

Explanation

In the United States, disinfectants are regulated as pesticides by the Environmental Protection Agency, so a salon disinfectant must carry an EPA registration number on its label. The FDA regulates cosmetics and drugs, OSHA sets workplace safety requirements, and state boards license practitioners rather than registering products.

Question 30Scientific Concepts (anatomy, physiology, chemistry, infection control)

Which of these is a chemical change?

  1. Steam condensing on a cool mirror
  2. Peroxide lightening hair pigment Correct answer.
  3. Ice melting into liquid water
  4. Salt dissolving in a glass of water

Explanation

A chemical change creates a new substance with different properties, as when an oxidizing product alters the pigment molecules inside the hair. Melting, dissolving, and condensing change only the physical state or dispersion of the same substance, so they are physical changes.

Question 31Scientific Concepts (anatomy, physiology, chemistry, infection control)

The chief motor nerve of the face, which controls the muscles of facial expression, is the:

  1. facial nerve Correct answer.
  2. trigeminal nerve
  3. cervical nerve
  4. supraorbital nerve

Explanation

The facial nerve, the seventh cranial nerve, is the chief motor nerve of the face and supplies the muscles used in facial expression. The trigeminal nerve is chiefly sensory, cervical nerves serve the neck and shoulders, and the supraorbital nerve is a sensory branch to the forehead.

Question 32Scientific Concepts (anatomy, physiology, chemistry, infection control)

The liquid portion of blood, which carries nutrients, hormones, and wastes, is called:

  1. lymph
  2. hemoglobin
  3. plasma Correct answer.
  4. platelets

Explanation

Plasma is the straw-colored liquid portion of blood that carries blood cells, platelets, nutrients, hormones, and waste products. Platelets are cell fragments involved in clotting, hemoglobin is the oxygen-carrying pigment inside red cells, and lymph is a separate fluid of the lymphatic system.

Question 33Scientific Concepts (anatomy, physiology, chemistry, infection control)

Rod-shaped bacteria are known as:

  1. bacilli Correct answer.
  2. diplococci
  3. spirilla
  4. cocci

Explanation

Bacteria are classified by shape: bacilli are rod-shaped, cocci are round, and spirilla are spiral. Diplococci are round bacteria that grow in pairs rather than rods.

Question 34Scientific Concepts (anatomy, physiology, chemistry, infection control)

When sugar is dissolved in water, the water is best described as:

  1. the emulsion
  2. the solvent Correct answer.
  3. the solute
  4. the suspension

Explanation

In any solution, the substance that does the dissolving is the solvent and the substance being dissolved is the solute, so water is the solvent and sugar the solute. Suspensions and emulsions are mixtures in which the ingredients are not truly dissolved.

Question 35Scientific Concepts (anatomy, physiology, chemistry, infection control)

Two or more different atoms joined by chemical bonds form:

  1. an element
  2. a compound Correct answer.
  3. a solution
  4. a mixture

Explanation

A compound forms when atoms of two or more different elements bond chemically, as in water or salt. An element contains only one kind of atom, while mixtures and solutions combine substances without chemical bonding between them.

Question 36Scientific Concepts (anatomy, physiology, chemistry, infection control)

Which sequence lists the phases of hair growth in the correct order, beginning with active growth and ending with the resting phase?

  1. telogen, catagen, anagen
  2. anagen, catagen, telogen Correct answer.
  3. catagen, anagen, telogen
  4. anagen, telogen, catagen

Explanation

Hair grows in a repeating cycle: anagen is the active growth phase, catagen is the short transitional phase, and telogen is the resting phase after which the hair sheds. Each follicle moves through this cycle independently of neighboring follicles.

Question 37Scientific Concepts (anatomy, physiology, chemistry, infection control)

In an alkaline permanent hair color, ammonia serves mainly to:

  1. neutralize the hydrogen peroxide
  2. deposit pigment deep into the cortex
  3. seal the cuticle after the service
  4. raise pH and swell the cuticle Correct answer.

Explanation

Ammonia is an alkaline agent that raises the pH of the mixture, which swells the cuticle so dye and developer can enter the cortex. Pigment deposition occurs once the color reaches the cortex, and closing the cuticle afterward is the job of an acidic after-treatment product.

Question 38Scientific Concepts (anatomy, physiology, chemistry, infection control)

Hard water causes shampoo to lather poorly mainly because it contains:

  1. calcium and magnesium ions Correct answer.
  2. high levels of dissolved sodium salts
  3. chlorine left over from water treatment
  4. excess hydrogen ions from low pH

Explanation

Hard water carries dissolved calcium and magnesium ions that react with soap and surfactant molecules to form insoluble salts, which suppress lather and can leave a dulling film on the hair. Sodium and potassium salts are characteristic of soft water, and pH and chlorine affect the hair in other ways.

Question 39Scientific Concepts (anatomy, physiology, chemistry, infection control)

Which sequence correctly traces the flow of blood from the heart and back to it again?

  1. arteries, then veins, then capillaries, then arterioles
  2. capillaries, then arteries, then venules, then veins
  3. arteries, arterioles, capillaries, venules, veins Correct answer.
  4. veins, then arteries, then capillaries, then venules

Explanation

Blood leaves the heart through arteries, which branch into smaller arterioles that feed the capillary beds where nutrients and gases are exchanged. Blood then drains into venules and finally veins, which return it to the heart.

Question 40Scientific Concepts (anatomy, physiology, chemistry, infection control)

During a service, a cosmetologist's hand is cut and blood contacts the wound. The first step is to:

  1. pour disinfectant directly onto the cut
  2. finish the client's service before cleaning up
  3. report the incident before cleaning the wound
  4. wash the cut with soap and running water Correct answer.

Explanation

Because standard precautions treat all blood and body fluids as potentially infectious, an exposure is handled immediately by washing the wound with soap and running water, then reporting the incident and following the salon's exposure plan. Disinfectants are formulated for surfaces and implements and must never be applied to broken skin.

Question 41Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

At what elevation is hair held to create a one-length blunt haircut?

  1. 90 degrees
  2. 45 degrees
  3. 0 degrees Correct answer.
  4. 180 degrees

Explanation

A one-length blunt cut follows the natural perimeter of the head, so the hair is held at zero elevation with no length removed above the guideline. Elevation above zero removes length and builds layers or graduation.

Question 42Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

What is the primary function of hydrogen peroxide developer in a hair color service?

  1. It permanently removes all natural pigment
  2. It seals the cuticle after processing
  3. It adds moisture to the cuticle
  4. It oxidizes dye molecules so color develops Correct answer.

Explanation

Developer supplies oxygen that oxidizes the dye intermediates, allowing them to form color inside the cortex. Its strength also determines how much lightening occurs during the service.

Question 43Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

Which ingredient is the active relaxing agent in a lye relaxer?

  1. Ammonium bisulfite
  2. Hydrogen peroxide
  3. Sodium hydroxide Correct answer.
  4. Ammonium thioglycolate

Explanation

Lye relaxers use sodium hydroxide, a strong alkaline agent that breaks disulfide bonds and straightens the hair. No-lye relaxers instead use guanidine hydroxide or other alternatives.

Question 44Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

When should a patch test be performed before an aniline-derivative color service?

  1. 24 to 48 hours before Correct answer.
  2. About 2 hours before
  3. About 10 minutes before
  4. At least one full week before

Explanation

A patch test is applied 24 to 48 hours before the color service so that any allergic reaction has time to appear. Testing immediately before the service would not reveal a delayed sensitivity.

Question 45Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

What does a neutralizer do after a thio relaxer or wave?

  1. It deposits color into the hair cortex
  2. It raises pH and swells the hair shaft
  3. It rebuilds disulfide bonds and lowers pH Correct answer.
  4. It breaks additional disulfide bonds

Explanation

The neutralizer is an oxidizing agent that lowers the hair's pH and re-forms the disulfide bonds in their new shape. This stops the reducing action and locks the curl or straight shape into place.

Question 46Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

Which approach helps prevent heat damage when thermally styling fine hair?

  1. Use lower heat and brief contact with the iron Correct answer.
  2. Skip heat protection and rely on hairspray
  3. Use the highest heat with wet hair
  4. Use the highest heat and hold each curl for a long time

Explanation

Fine hair has less mass and is more vulnerable to heat, so a lower temperature and short contact time reduce the risk of damage. A heat protectant should also be used before styling.

Question 47Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

In the hair color level system, how are levels numbered?

  1. Levels run from 0 to 5 only
  2. Levels measure porosity rather than depth
  3. 1 is the lightest and 10 is the darkest
  4. 1 is the darkest and 10 is the lightest Correct answer.

Explanation

The level system describes depth of color, with level 1 as black and level 10 as the lightest blonde. Lower numbers indicate darker, more concentrated color.

Question 48Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

What is the purpose of texturizing shears?

  1. To add weight to the ends
  2. To remove bulk and blend lengths Correct answer.
  3. To create a blunt perimeter line
  4. To shorten length evenly across a section

Explanation

Texturizing shears have teeth that cut only part of the hair in a section, removing bulk and softening lines. They are used to blend and reduce weight, not to establish length or a perimeter.

Question 49Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

Razor cutting is best suited for producing which result?

  1. Soft, feathered ends Correct answer.
  2. Tighter curl formation with reduced frizz
  3. A blunt one-length perimeter line
  4. Added weight and density at the perimeter

Explanation

A razor slices hair at an angle, creating soft, tapered, feathered ends on suitable hair. It is generally avoided on fine or tightly curly hair because it can cause frizz and uneven ends.

Question 50Hair Care and Hair Services (cutting, styling, chemical texture, coloring)

What does a concentrator nozzle do on a blow dryer?

  1. Directs airflow to one small section Correct answer.
  2. Spreads air over a wide area of hair
  3. Cools the air before it reaches the hair
  4. Adds moisture to the hair cuticle

Explanation

A concentrator nozzle narrows the airflow so it is directed to a specific section, giving the stylist control for smoothing and shaping. A diffuser, by contrast, spreads air over a wider area.