I85PREP
⌘ K
NM Cosmetology study materials
NM Cosmetology study resources

NM Cosmetology practice questions

One question at a time. Build your NM Cosmetology understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1Scientific Concepts and Infection Control

Which governmental agency enforces the safety and labeling standards for the disinfectants a Nevada salon uses on implements?

  1. The Occupational Safety and Health Administration
  2. The Environmental Protection Agency Correct answer.
  3. The Federal Trade Commission
  4. The Food and Drug Administration

Explanation

Disinfectants are classified as pesticides, so their registration, efficacy claims, and labeling fall under the Environmental Protection Agency through the Federal Insecticide, Fungicide, and Rodenticide Act. The FDA regulates cosmetics and drugs, not disinfectant solutions, and OSHA governs workplace safety practices rather than product registration.

Question 2Scientific Concepts and Infection Control

A client arrives with a small patch of inflamed, crusty skin on the scalp. Under Nevada rules, what is the appropriate action for the cosmetologist?

  1. Refer the client to a physician and refrain from the service Correct answer.
  2. Proceed with the service but avoid the affected area
  3. Disinfect the area with an EPA-registered product before working
  4. Treat the area with an over-the-counter antifungal and proceed

Explanation

A cosmetologist may not diagnose or treat abnormal skin or scalp conditions; suspected infections or disorders must be referred to a physician. Providing a service over inflamed or broken skin risks spreading infection and exceeds the scope of a licensed cosmetologist.

Question 3Scientific Concepts and Infection Control

Which term describes a disease-causing microorganism that is capable of causing infection in a host?

  1. A pathogen Correct answer.
  2. A saprophyte
  3. A spore
  4. A commensal

Explanation

A pathogen is any microorganism-bacterium, virus, fungus, or parasite-that can produce disease in a host. Saprophytes and commensals are organisms that generally live without causing harm, and a spore is a resistant resting form, not a category of disease-causing organism.

Question 4Scientific Concepts and Infection Control

Which of these is classified as a bloodborne pathogen of major concern in the salon setting?

  1. Hepatitis B virus Correct answer.
  2. Trichophyton rubrum
  3. Staphylococcus aureus
  4. Pseudomonas aeruginosa

Explanation

Hepatitis B is a bloodborne virus transmitted through contact with infected blood and is a primary concern when implements contact blood. Staphylococcus and Pseudomonas are bacteria associated with skin and wound infections, and Trichophyton is a fungus that causes ringworm.

Question 5Scientific Concepts and Infection Control

Which statement correctly describes the difference between disinfection and sterilization?

  1. Sterilization reduces microbial count to a safe public health level
  2. Sterilization destroys all microbial life, including bacterial spores Correct answer.
  3. Disinfection destroys all microbial life, including bacterial spores
  4. Disinfection and sterilization both destroy only vegetative bacteria

Explanation

Sterilization is the complete destruction of all microbial life, including highly resistant bacterial spores. Disinfection eliminates most pathogens on surfaces but does not reliably destroy spores, which is why the two processes are not interchangeable.

Question 6Scientific Concepts and Infection Control

A cosmetologist is cleaning a blood spill on the floor. Which personal protective equipment is most appropriate for this task?

  1. Bare hands with immediate washing afterward
  2. A single pair of reusable gloves shared by staff
  3. Disposable gloves and a face mask Correct answer.
  4. A cloth towel wrapped around the hands

Explanation

Blood spills require barrier protection, so disposable gloves protect the hands and a mask guards against splashes reaching mucous membranes. Reusable shared gloves and bare hands do not provide a reliable barrier and risk cross-contamination between workers and clients.

Question 7Scientific Concepts and Infection Control

Which practice best demonstrates proper hand hygiene before beginning a client service?

  1. Rinsing hands briefly under cool water
  2. Applying hand sanitizer over visible soil
  3. Washing with soap and warm water for at least 20 seconds Correct answer.
  4. Wiping hands with a disinfecting towelette

Explanation

Effective hand hygiene uses soap and warm running water with friction for at least 20 seconds to lift and rinse away transient microorganisms. Sanitizers are a supplement for visibly clean hands, and disinfecting towelettes are intended for surfaces, not skin.

Question 8Scientific Concepts and Infection Control

Which of these is an example of a local infection?

  1. A pimple containing pus on the chin Correct answer.
  2. A systemic reaction affecting multiple organs
  3. A fever with body-wide aches
  4. An infection that has entered the bloodstream

Explanation

A local infection is confined to a specific area of the body, such as a pimple or boil containing pus. Fever, bloodstream involvement, and multi-organ reactions describe generalized or systemic infections that have spread beyond the original site.

Question 9Scientific Concepts and Infection Control

Why must a disinfectant be used at the dilution specified on its label rather than mixed stronger?

  1. Exceeding the label concentration can be unsafe and may not improve efficacy Correct answer.
  2. Stronger solutions evaporate too quickly to work
  3. Dilution has no effect on antimicrobial action
  4. Concentrated products damage only plastic implements

Explanation

EPA-registered disinfectants are tested and approved at a specific concentration and contact time, and deviating from the label can create health hazards without increasing effectiveness. Correct dilution ensures the product achieves its stated kill claims while protecting the worker and client.

Question 10Scientific Concepts and Infection Control

A cosmetologist places freshly used metal shears into a disinfectant solution without first scrubbing them. What is the primary problem with this action?

  1. The shears will become sterile too quickly
  2. The disinfectant will evaporate faster
  3. Metal implements cannot be disinfected
  4. Organic debris shields microorganisms from the disinfectant Correct answer.

Explanation

Blood, hair, and product residue form a barrier that prevents the disinfectant from contacting and killing microorganisms, so implements must be cleaned with soap and water before immersion. Disinfection is only effective on surfaces that are free of visible debris.

Question 11Scientific Concepts and Infection Control

Which of these items is a single-use, porous item that must be discarded after one client?

  1. A wooden manicure stick Correct answer.
  2. A metal cuticle pusher
  3. A glass mixing dish
  4. A stainless steel comb

Explanation

Porous materials such as wood absorb moisture and microorganisms and cannot be reliably cleaned and disinfected, so they are treated as single-use. Metal and glass implements are nonporous and can be cleaned, disinfected, and reused.

Question 12Scientific Concepts and Infection Control

What is the correct sequence for handling a blood-contaminated towel after a service?

  1. Rinse it in the sink and hang it to dry
  2. Spray it with disinfectant and reuse it
  3. Handle it with gloves, place it in a labeled container, and launder it separately Correct answer.
  4. Place it directly into a closed hamper with clean linens

Explanation

Blood-contaminated linens must be handled with gloves, kept apart from clean linens in a designated labeled container, and laundered according to bloodborne pathogen precautions. Mixing contaminated linens with clean ones or reusing sprayed towels defeats the purpose of the control.

Question 13Scientific Concepts and Infection Control

Which characteristic distinguishes a virus from a bacterium?

  1. A virus contains a nucleus and organelles
  2. A virus can be killed by antibiotics
  3. A virus requires a host cell to reproduce Correct answer.
  4. A virus is always larger than a bacterium

Explanation

Viruses are obligate intracellular parasites, meaning they must invade a host cell to replicate because they lack their own metabolic machinery. Bacteria are complete cells that can reproduce independently and are susceptible to antibiotics, whereas viruses are not.

Question 14Scientific Concepts and Infection Control

A client reports a recent ringworm infection on the scalp. Which organism causes this condition?

  1. A fungus Correct answer.
  2. A bacterium
  3. A virus
  4. A protozoan

Explanation

Ringworm, or tinea, is a fungal infection of the skin, hair, or nails caused by dermatophytes. It is contagious and is a contraindication for scalp and hair services until the client has been treated.

Question 15Scientific Concepts and Infection Control

Which statement about bacterial spores is accurate for salon disinfection?

  1. Spores reproduce only inside living human cells
  2. Spores are easily destroyed by quaternary ammonium compounds
  3. Spores are a resistant form that many disinfectants cannot kill Correct answer.
  4. Spores are a type of virus

Explanation

Certain bacteria form spores that resist heat, drying, and many chemical disinfectants, which is why sporicidal products are labeled specifically for that capability. Standard salon disinfectants often carry claims that exclude spore destruction.

Question 16Scientific Concepts and Infection Control

Which action best prevents cross-contamination between two consecutive clients receiving manicures?

  1. Cleaning and disinfecting reusable implements and discarding single-use items Correct answer.
  2. Rinsing implements in cool water only
  3. Reusing the same file after brushing off dust
  4. Wiping the table with a dry cloth between clients

Explanation

Cross-contamination is prevented when reusable implements are cleaned and then disinfected between clients and porous single-use items are discarded. Dry wiping or rinsing does not remove or kill microorganisms, so those practices leave contamination behind.

Question 17Scientific Concepts and Infection Control

A cosmetologist notices a client has a fever, chills, and a widespread rash. What is the most appropriate response?

  1. Disinfect the client's skin and continue the service
  2. Proceed with the service and avoid discussing the symptoms
  3. Recommend an antibiotic ointment and continue
  4. Postpone the service and advise the client to seek medical care Correct answer.

Explanation

Fever, chills, and a widespread rash suggest a systemic or contagious condition that falls outside the cosmetologist's scope to evaluate or treat. Postponing the service and referring the client to a physician protects both the client and the practitioner.

Question 18Scientific Concepts and Infection Control

Which of these is classified as a parasite that can be transmitted through shared combs and brushes?

  1. Impetigo
  2. Herpes simplex
  3. Pediculosis capitis Correct answer.
  4. Tinea pedis

Explanation

Pediculosis capitis is an infestation of the scalp by head lice, which spread through shared personal items such as combs, brushes, and hats. Tinea pedis is fungal, impetigo is bacterial, and herpes simplex is viral, so none of them are parasites.

Question 19Scientific Concepts and Infection Control

In Nevada, which of the following is required for a disinfectant to be legally used in a salon?

  1. It must be approved by the local cosmetology school
  2. It must carry an EPA registration number and be used per label directions Correct answer.
  3. It must be mixed with bleach for maximum strength
  4. It must be fragrance-free and clear in color

Explanation

Salon disinfectants must be EPA-registered hospital-grade products used according to the label's dilution, contact time, and intended surface. Mixing products or using unregistered solutions can be ineffective and dangerous.

Question 20Scientific Concepts and Infection Control

Which statement correctly explains why a hospital-grade tuberculocidal disinfectant is significant in salon practice?

  1. It proves the product is safe for skin contact
  2. It means the product sterilizes all implements
  3. It demonstrates efficacy against a highly resistant organism used as a benchmark Correct answer.
  4. It indicates the product is approved for food surfaces

Explanation

Tuberculocidal efficacy is used as a benchmark because the tubercle organism is highly resistant to disinfection, so a product that kills it is considered effective against a broad range of pathogens. The claim does not make the product suitable for skin or imply sterilization.

Question 21Scientific Concepts and Infection Control

Which of the following best describes the role of the immune system in relation to a client's susceptibility to infection?

  1. Immunity is determined solely by the cleanliness of implements
  2. A strong immune system prevents all infections permanently
  3. The immune system has no effect on salon-acquired infections
  4. A weakened immune system increases susceptibility to infection Correct answer.

Explanation

Clients who are immunocompromised, elderly, or ill are more vulnerable to infection because their defenses are reduced. Standard precautions must be applied to every client because immunity varies and cannot be assessed by appearance.

Question 22Scientific Concepts and Infection Control

A cosmetologist is evaluating the safety of a foot spa basin between clients. Which practice is most consistent with infection-control standards?

  1. Cleaning the basin, then applying a label-compliant disinfectant for the full contact time Correct answer.
  2. Wiping the basin with a cloth dipped in soapy water
  3. Filling the basin with hot water and running the jets briefly
  4. Rinsing the basin with water and drying it with a shared towel

Explanation

Foot spa basins harbor biofilm and debris in jets and screens, so they must be cleaned of organic matter and then treated with a label-compliant disinfectant for the full stated contact time. Rinsing or hot water alone does not achieve disinfection.

Question 23Scientific Concepts and Infection Control

A bottle of disinfectant states a 10-minute contact time. A cosmetologist sprays implements and wipes them dry after 2 minutes. What is the consequence?

  1. The implements require no further action because they were sprayed
  2. The implements are sterilized by the wiping action
  3. The implements are not properly disinfected because the contact time was not met Correct answer.
  4. The implements are fully disinfected because the product was used

Explanation

Disinfectants require the full label-specified contact time to achieve the claimed kill of microorganisms. Wiping the product away early interrupts the chemical action and leaves the implements insufficiently disinfected.

Question 24Scientific Concepts and Infection Control

Which combination of conditions most favors bacterial growth in a salon environment?

  1. Direct sunlight and low humidity
  2. A dry, cool, well-ventilated surface
  3. A sealed dry cabinet with clean linens
  4. Warmth, moisture, and an organic food source Correct answer.

Explanation

Bacteria multiply most readily in warm, moist environments where organic material such as skin cells, blood, or product residue supplies nutrients. Dry, cool, or low-humidity conditions slow or prevent growth.

Question 25Scientific Concepts and Infection Control

A cosmetologist develops a policy of wearing gloves for every client service. Which statement best evaluates this policy?

  1. It is a reasonable barrier practice but hand hygiene is still required Correct answer.
  2. It replaces the need to disinfect implements
  3. It eliminates the need for handwashing between clients
  4. It is unnecessary because gloves prevent all contamination

Explanation

Gloves provide a barrier that reduces contact with blood and body fluids, but they do not replace hand hygiene, implement disinfection, or surface cleaning. Hands must still be washed before and after glove use, and gloves must be changed between clients.

Question 26Scientific Concepts and Infection Control

Which agency enforces salon sanitation rules and inspects licensed establishments in Nevada?

  1. The local fire marshal's office
  2. The Nevada Department of Agriculture
  3. The Nevada State Board of Cosmetology Correct answer.
  4. The federal Occupational Safety and Health Administration

Explanation

In Nevada, the State Board of Cosmetology writes and enforces the sanitation and licensing regulations that govern salons and licensed practitioners, and its inspectors check compliance. Other agencies may regulate workplace safety, food, or fire codes, but they do not license or inspect cosmetology establishments for sanitation.

Question 27Scientific Concepts and Infection Control

A disinfectant label lists both a use-dilution and a contact time. Which practice follows the manufacturer's directions correctly?

  1. Apply the product and dry the item right away with a clean towel
  2. Mix the product at the labeled dilution and leave it wet on the item for the full contact time Correct answer.
  3. Use the product full strength and rinse it off immediately after wiping
  4. Dilute the product more than directed so it is gentler on implements

Explanation

Efficacy depends on both the correct concentration and the full contact time stated on the label; the surface must stay wet for that entire period. Using a different dilution or shortening the contact time can leave pathogens viable even though the item looks clean.

Question 28Scientific Concepts and Infection Control

Which term describes a condition in which pathogens are present on or in the body but the person shows no signs or symptoms?

  1. Local infection
  2. Contagious inflammation
  3. Asymptomatic carriage Correct answer.
  4. Systemic infection

Explanation

A person can harbor and transmit pathogens without displaying any signs or symptoms, which is why standard precautions apply to every client. Local and systemic infections refer to the extent of infection, and both typically produce observable signs.

Question 29Scientific Concepts and Infection Control

Why are porous items such as cloth towels and neck strips treated differently from hard, nonporous implements?

  1. Porous items hold disinfectant so well that they never need cleaning
  2. Porous items are always sterile when they come from the supplier
  3. Porous items cannot be reliably disinfected and are used once and discarded or laundered Correct answer.
  4. Porous items resist bacterial growth because they absorb moisture

Explanation

Porous materials trap moisture and organic matter, so disinfectants cannot reliably penetrate them; standard practice is to use them once and then discard or launder them. Hard, nonporous implements can be cleaned and then disinfected because their surfaces can be fully contacted by the chemical.

Question 30Scientific Concepts and Infection Control

A cosmetologist is choosing between two EPA-registered disinfectants for metal implements. Which factor most directly determines whether a product can be used on those implements?

  1. Whether the product is the least expensive per gallon
  2. Whether the label lists the specific item type and material as an approved use Correct answer.
  3. Whether the product has a pleasant fragrance
  4. Whether the product foams when agitated

Explanation

An EPA-registered disinfectant is only appropriate for surfaces and materials named on its label; using it off-label may damage implements and does not ensure the claimed efficacy. Fragrance, cost, and foaming are not measures of disinfection suitability.

Question 31Scientific Concepts and Infection Control

A client arrives with an inflamed, oozing lesion on the scalp. What is the most appropriate action for the cosmetologist?

  1. Proceed with the service while wearing gloves
  2. Cover the lesion with a neck strip and continue
  3. Apply a disinfectant directly to the lesion before shampooing
  4. Postpone the service and refer the client to a physician Correct answer.

Explanation

An inflamed, oozing lesion may be contagious or medically significant, and a cosmetologist is not trained or licensed to diagnose or treat it. Standard practice is to decline or postpone the service and refer the client for medical evaluation, which protects both the client and the practitioner.

Question 32Scientific Concepts and Infection Control

Which statement accurately describes the relationship between cleaning and disinfecting an implement?

  1. Cleaning and disinfecting can be performed in either order with equal results
  2. Disinfecting first makes cleaning unnecessary
  3. Cleaning must occur first because residue shields pathogens from the disinfectant Correct answer.
  4. Disinfecting alone removes all visible debris from the implement

Explanation

Cleaning removes visible debris, oil, and residue that can protect microorganisms and interfere with chemical contact. Only after cleaning can a disinfectant reach the surface and work as labeled, so the sequence matters.

Question 33Scientific Concepts and Infection Control

A cosmetologist uses an autoclave to process metal implements. What does this process accomplish?

  1. It removes visible debris but leaves spores intact
  2. It disinfects items to the level of a hospital-grade product
  3. It coats the implements with a protective antimicrobial film
  4. It destroys all microbial life, including spores, on the items Correct answer.

Explanation

Sterilization destroys all forms of microbial life, including bacterial spores, which ordinary disinfectants may not eliminate. An autoclave uses pressurized steam to achieve sterilization, which is a higher level of microbial control than disinfection.

Question 34Scientific Concepts and Infection Control

Which situation most clearly requires the cosmetologist to wear gloves in addition to performing hand hygiene?

  1. Handling implements contaminated with a client's blood Correct answer.
  2. Shampooing a client with intact scalp skin
  3. Answering the telephone at the reception desk
  4. Applying nail polish to healthy nails

Explanation

Gloves are required when contact with blood or other potentially infectious material is reasonably anticipated, and hand hygiene still follows glove removal. Routine services on intact skin and front-desk tasks do not involve exposure to bloodborne pathogens.

Question 35Scientific Concepts and Infection Control

A cosmetologist mixes a disinfectant in a spray bottle and writes the date and product name on it. Why is this labeling practice important?

  1. It proves the product has been EPA registered
  2. It ensures the correct product and dilution are used and tracks when the solution was prepared Correct answer.
  3. It satisfies the client's right to know the product's fragrance
  4. It helps the salon order replacement bottles on schedule

Explanation

Secondary containers must be labeled with the product identity, and recording the preparation date helps ensure the solution is used within its effective life. Mislabeled or expired solutions can lead to using the wrong product or a weakened dilution that fails to disinfect.

Question 36Scientific Concepts and Infection Control

Which practice best protects a cosmetologist from an occupationally acquired infection?

  1. Relying on clients to disclose all infections before service
  2. Receiving recommended vaccinations and following standard precautions with every client Correct answer.
  3. Disinfecting hands with a towel instead of washing them
  4. Wearing the same gloves for an entire workday

Explanation

Vaccination plus consistent standard precautions, including hand hygiene and appropriate gloves, reduces the risk of acquiring and transmitting infections at work. Because clients may not know or disclose their status, precautions must be applied routinely rather than only when an infection is reported.

Question 37Scientific Concepts and Infection Control

A cosmetologist is deciding how to handle a client's open cut on the hand before a manicure. Which approach reflects correct infection control reasoning?

  1. Reschedule or decline the service because an open wound can shed pathogens and is vulnerable to infection Correct answer.
  2. Proceed because nail services never involve contact with blood
  3. Treat the cut with a salon antiseptic and continue without gloves
  4. Apply a styptic product and continue the service

Explanation

An open wound can be a source of bloodborne pathogens and is also more susceptible to infection, so the safest choice is to postpone the service. Treating the wound or proceeding without barriers exceeds the cosmetologist's scope and increases exposure risk for both parties.

Question 38Scientific Concepts and Infection Control

A salon uses a whirlpool foot spa with a recirculating pump. Which maintenance step is most important for preventing biofilm-related infections between clients?

  1. Wiping only the visible surfaces of the basin with a towel
  2. Rinsing the basin with clean water and refilling it for the next client
  3. Adding extra disinfectant to the water while the client's feet are soaking
  4. Draining, cleaning, and disinfecting the internal lines and basin according to the manufacturer's instructions after each client Correct answer.

Explanation

Recirculating foot spas can harbor biofilm inside pumps and lines, where pathogens survive ordinary surface wiping. Thorough draining, cleaning, and disinfecting of both the basin and internal components after each client, following the manufacturer's protocol, is necessary to control that risk.

Question 39Scientific Concepts and Infection Control

A cosmetologist reads that a product is bactericidal, fungicidal, and virucidal. What does this combination of claims indicate?

  1. The product removes visible debris from implements
  2. The product sterilizes all surfaces, including spores
  3. The product is safe for use on human skin
  4. The product can destroy bacteria, fungi, and viruses when used as directed Correct answer.

Explanation

These terms describe the classes of microorganisms the product is labeled to destroy: bacteria, fungi, and viruses. The claims apply only when the product is used exactly as directed and do not imply sporicidal activity, skin safety, or cleaning ability.

Question 40Scientific Concepts and Infection Control

Two disinfectants are EPA registered and both claim efficacy against the same organisms. Which additional consideration is most relevant when selecting one for repeated daily use on metal shears?

  1. Whether the product is sold in the largest available container
  2. Whether the bottle design is easy to grip
  3. Whether the label warns of corrosion or damage to metal and specifies a compatible contact time Correct answer.
  4. Whether the salon's clients prefer a particular scent

Explanation

When efficacy claims are equivalent, material compatibility and practical contact time determine whether the product can be used consistently without damaging implements. A product that corrodes metal or requires an impractical contact time may lead to shortcuts that undermine disinfection.

Question 41Hair Care and Treatments

A client with fine, limp hair wants more body. Which blow-dry technique best lifts the root while minimizing heat damage?

  1. Rough-dry with high heat until bone dry, then smooth with a flat iron
  2. Towel-dry, then direct airflow at the scalp against the growth pattern using medium heat Correct answer.
  3. Apply heavy pomade to soaking-wet roots and air-dry
  4. Wrap hair in a tight bun and dry under a hood dryer on high

Explanation

Lifting the root requires directing airflow opposite to the natural growth pattern while hair is damp, which lifts the cuticle away from the scalp and creates volume. Medium heat with continuous motion limits thermal damage compared with prolonged high heat.

Question 42Hair Care and Treatments

Which ingredient is a humectant commonly used in moisturizing hair conditioners?

  1. Glycerin Correct answer.
  2. Sodium lauryl sulfate
  3. Isopropyl alcohol
  4. Mineral oil

Explanation

A humectant attracts and holds water from the surrounding air and from the hair itself, and glycerin is a classic example used in conditioning formulas. The other listed ingredients are a drying alcohol, a surfactant, and an occlusive oil, none of which draw moisture in.

Question 43Hair Care and Treatments

What is the primary purpose of the anagen phase in the hair growth cycle?

  1. Detachment of the follicle from the dermal papilla
  2. Resting of the follicle before new growth
  3. Active growth and keratin production Correct answer.
  4. Shedding of the old club hair

Explanation

Anagen is the active growth phase, during which cells in the matrix of the follicle divide rapidly and build the keratinized hair shaft. Catagen is the transitional phase and telogen is the resting phase that ends with shedding.

Question 44Hair Care and Treatments

Which hair texture typically holds a curl set the longest?

  1. Fine, straight hair
  2. Medium to coarse, naturally wavy hair Correct answer.
  3. Very fine, oily hair
  4. Coarse, straight hair

Explanation

Curl retention depends on the hair's ability to hold a hydrogen bond configuration, which is stronger in coarser hair with some natural wave. Fine or very straight hair has a smoother cuticle and less structural memory, so the set relaxes faster.

Question 45Hair Care and Treatments

A client's scalp shows small, dry, flaky patches with no redness or greasiness. Which condition is most consistent with this description?

  1. Pediculosis capitis
  2. Tinea capitis
  3. Pityriasis capitis simplex Correct answer.
  4. Pityriasis steatoides

Explanation

Pityriasis capitis simplex is the dry, flaky form of dandruff, presenting as small white scales without inflammation or oiliness. The greasy form is pityriasis steatoides, while tinea and pediculosis have different presentations entirely.

Question 46Hair Care and Treatments

Which shampoo formulation is best suited to a client with a dry, chemically relaxed scalp that reacts to strong surfactants?

  1. A sulfate-free moisturizing shampoo with mild surfactants Correct answer.
  2. A clarifying shampoo with high surfactant concentration
  3. A medicated coal-tar shampoo
  4. A volumizing shampoo with high alcohol content

Explanation

Mild, sulfate-free surfactants clean without stripping the scalp's lipid barrier, which suits sensitive or dry scalps. Clarifying and medicated formulas are more aggressive, and high-alcohol volumizers add further dryness.

Question 47Hair Care and Treatments

What does the term porosity describe about a hair strand?

  1. The diameter of the individual strand
  2. The ability of the cuticle to absorb and retain moisture Correct answer.
  3. The natural color level of the hair
  4. The amount of curl pattern present

Explanation

Porosity refers to how readily the cuticle layer allows moisture to pass in and out of the cortex. High porosity absorbs quickly but loses moisture fast, while low porosity resists absorption.

Question 48Hair Care and Treatments

Which tool is designed to remove bulk length quickly while leaving a blunt perimeter line?

  1. Thinning shear
  2. Shear Correct answer.
  3. Razor
  4. Clipper

Explanation

A straight shear creates clean, blunt cutting lines and can remove length efficiently when used with controlled sections. Razors and thinning shears produce tapered or softened ends, and clippers are for short, close work.

Question 49Hair Care and Treatments

A client with high-porosity, color-treated hair complains that color fades within two weeks. Which treatment approach best addresses the cause?

  1. Weekly clarifying shampoo to remove buildup
  2. Switching to a high-alcohol volumizing shampoo
  3. Protein and moisture treatments plus a low-pH, color-protective regimen Correct answer.
  4. Daily hot-oil treatments with high heat

Explanation

High porosity means the lifted cuticle leaks pigment and moisture, so the fix is to reinforce the protein structure, restore moisture, and use low-pH products that keep the cuticle flat. Clarifying and high-alcohol products accelerate fading.

Question 50Hair Care and Treatments

During a relaxer service, a client reports a burning sensation on the scalp. What is the correct immediate action?

  1. Cover the scalp with a plastic cap and wait
  2. Apply a neutralizing shampoo over the relaxer and continue
  3. Continue but add more relaxer to finish faster
  4. Rinse the product out immediately and assess the scalp Correct answer.

Explanation

Burning indicates chemical irritation or a beginning chemical burn, so the product must be removed at once with thorough rinsing before any neutralization step. Continuing the service risks serious scalp injury.