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AL Barber practice questions

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Question 1Sanitation, Sterilization, and Safety Practices

What is the primary purpose of a hospital-grade disinfectant in a barbershop?

  1. To condition the client's scalp
  2. To kill or inactivate pathogens on hard surfaces Correct answer.
  3. To soften beard hair before shaving
  4. To remove loose hair from the floor

Explanation

Hospital-grade disinfectants are EPA-registered products formulated to kill or inactivate harmful microorganisms on nonporous implements and surfaces. Cleaning removes visible debris, but disinfection is the step that reduces pathogens to a safe level.

Question 2Sanitation, Sterilization, and Safety Practices

Immediately after a client's haircut, a blood-contaminated razor blade should first be handled by doing what?

  1. Wiping it on a towel and returning it to the drawer
  2. Placing it in a covered sharps container Correct answer.
  3. Spraying it with air freshener
  4. Rinsing it in the shampoo bowl

Explanation

Blood-contaminated sharps must go directly into a puncture-resistant, labeled sharps container to prevent needlestick injury and exposure. They should never be recapped, wiped, or reused.

Question 3Sanitation, Sterilization, and Safety Practices

Which item is considered a single-use, porous item in barbering?

  1. A metal comb
  2. A straight razor
  3. A neck strip Correct answer.
  4. A glass sanitizer jar

Explanation

Neck strips are porous, single-use items that contact the client's skin and cannot be effectively disinfected, so they are discarded after one use. Metal combs, razors, and glass jars are reusable and can be cleaned and disinfected.

Question 4Sanitation, Sterilization, and Safety Practices

How long should hands be lathered with soap and water during routine handwashing?

  1. About 3 seconds
  2. At least 20 seconds Correct answer.
  3. Exactly 5 seconds
  4. Until the soap runs out

Explanation

Routine handwashing requires lathering all surfaces, including between fingers and under nails, for at least 20 seconds before rinsing. This duration allows soap to lift and remove transient microorganisms effectively.

Question 5Sanitation, Sterilization, and Safety Practices

What does the term sterilization mean?

  1. The complete destruction of all microbial life, including spores Correct answer.
  2. The removal of visible dirt from a surface
  3. The reduction of bacteria on a surface to a safe level
  4. The covering of a surface to prevent contamination

Explanation

Sterilization destroys all forms of microbial life, including bacterial spores, and is typically achieved with an autoclave. Disinfection and cleaning reduce or remove microorganisms but do not guarantee total elimination.

Question 6Sanitation, Sterilization, and Safety Practices

A barber notices a small cut on their own finger during a shave. What is the appropriate immediate action?

  1. Stop the service, wash the cut, and cover it with a bandage and glove Correct answer.
  2. Rinse the cut with aftershave and keep working
  3. Ask the client to hold the razor while the barber tends the cut
  4. Continue the shave and wash hands afterward

Explanation

Any open wound on a service provider should be cleaned and covered before continuing, and a glove or finger cot should protect the site. Continuing to work with an uncovered cut risks bloodborne pathogen transmission to and from the client.

Question 7Sanitation, Sterilization, and Safety Practices

Which practice best prevents cross-contamination between clients?

  1. Disinfecting implements once at the end of the day
  2. Rinsing implements with water between clients
  3. Cleaning and disinfecting implements after each client Correct answer.
  4. Storing clean and used implements together

Explanation

Implements must be cleaned and then disinfected after every client to prevent transfer of microorganisms. End-of-day disinfection leaves pathogens on tools used throughout the day.

Question 8Sanitation, Sterilization, and Safety Practices

Why must electrical tools such as clippers be kept away from sinks and wet hands?

  1. Water voids the client's warranty
  2. Water changes the blade angle
  3. Water increases the risk of electric shock Correct answer.
  4. Water dulls the clipper blades

Explanation

Water conducts electricity, so using or storing electrical tools near sinks or with wet hands increases the risk of shock or electrocution. Electrical equipment should be kept dry and unplugged when not in use.

Question 9Sanitation, Sterilization, and Safety Practices

A disinfectant label states a contact time of 10 minutes. What does this require the barber to do?

  1. Dip the implement briefly and remove it
  2. Wipe the implement dry immediately after spraying
  3. Leave the implement fully submerged for the full 10 minutes Correct answer.
  4. Rinse the implement after 1 minute

Explanation

Contact time is the period an item must remain exposed to the disinfectant for it to achieve its labeled kill claims. Removing the item early or wiping it dry shortens exposure and reduces effectiveness.

Question 10Sanitation, Sterilization, and Safety Practices

Which step comes first when preparing a used comb for disinfection?

  1. Place it in a sealed bag for later use
  2. Soak it in disinfectant for one hour
  3. Wipe it with a dry towel only
  4. Wash it with soap and water to remove hair and debris Correct answer.

Explanation

Cleaning with soap and water removes organic matter and debris that can shield microorganisms and inactivate disinfectants. Disinfection is only effective after the item has been thoroughly cleaned.

Question 11Sanitation, Sterilization, and Safety Practices

What is the correct way to store disinfected implements?

  1. In the same drawer as used clippers
  2. In an open tray next to the sink
  3. Wrapped in a used towel
  4. In a clean, closed container separate from soiled tools Correct answer.

Explanation

Disinfected implements should be kept in a clean, closed container to protect them from dust and contamination and to keep them separate from soiled items. Mixing clean and dirty tools defeats the disinfection process.

Question 12Sanitation, Sterilization, and Safety Practices

A client arrives with an inflamed, weeping scalp lesion. What is the safest course of action for the barber?

  1. Decline the service and refer the client to a physician Correct answer.
  2. Apply a disinfectant to the lesion and continue
  3. Cover the lesion with a neck strip and shave around it
  4. Proceed with the haircut and avoid the lesion

Explanation

Contagious or open skin conditions are contraindications for service because they risk spreading infection to the barber and other clients. The client should be referred to a medical professional for evaluation.

Question 13Sanitation, Sterilization, and Safety Practices

Why is an autoclave used in some barbershops?

  1. To sterilize implements using high-pressure steam Correct answer.
  2. To dry wet combs quickly
  3. To sharpen straight razors
  4. To deodorize the shop

Explanation

An autoclave uses high-pressure saturated steam to sterilize implements, destroying all microbial life including spores. It is the standard method when sterilization, rather than disinfection, is required.

Question 14Sanitation, Sterilization, and Safety Practices

A bottle of disinfectant has been diluted with tap water and stored in an unlabeled spray bottle. What is the best action?

  1. Add more concentrate to strengthen it
  2. Use it and label the bottle afterward
  3. Discard it and prepare a fresh, labeled solution Correct answer.
  4. Smell the bottle to identify the product

Explanation

Unlabeled and improperly diluted disinfectants may be at the wrong concentration or mistaken for other products, so they should be discarded and replaced with a properly prepared, labeled solution. Disinfectants must be mixed according to the manufacturer's directions.

Question 15Sanitation, Sterilization, and Safety Practices

What is the safest way to dispose of a used straight razor blade?

  1. Leave it on the station counter for later pickup
  2. Bend it by hand and throw it away
  3. Wrap it in tissue and drop it in a trash can
  4. Place it in a rigid sharps container kept out of client reach Correct answer.

Explanation

Blades are sharp, potentially contaminated waste and must go into a puncture-resistant sharps container that is kept closed and out of reach. Handling blades by hand or placing them in regular trash risks injury and exposure.

Question 16Sanitation, Sterilization, and Safety Practices

Which statement correctly distinguishes cleaning from disinfection?

  1. Cleaning removes visible debris, while disinfection destroys or inactivates microorganisms Correct answer.
  2. Cleaning destroys spores, while disinfection removes hair
  3. Cleaning sterilizes tools, while disinfection only dries them
  4. Cleaning and disinfection are the same process

Explanation

Cleaning is the mechanical removal of visible soil, while disinfection uses chemicals to destroy or inactivate most pathogens on nonporous surfaces. Both steps are required, in that order, for proper implement care.

Question 17Sanitation, Sterilization, and Safety Practices

A barber uses a fresh neck strip and cape for each client. Which principle does this illustrate?

  1. Sterilizing client-contact surfaces
  2. Using a barrier to prevent cross-contamination Correct answer.
  3. Sharpening implements before use
  4. Ventilating the work area

Explanation

Barriers such as neck strips and clean capes create a physical shield between the client and potentially contaminated surfaces. They are discarded or laundered after each client to prevent cross-contamination.

Question 18Sanitation, Sterilization, and Safety Practices

What is the recommended first action when a chemical disinfectant splashes into a barber's eye?

  1. Apply a soothing lotion to the eye
  2. Rub the eye vigorously with a towel
  3. Wait to see if irritation develops
  4. Flush the eye with clean water for at least 15 minutes and seek medical help Correct answer.

Explanation

Chemical eye splashes require immediate, prolonged flushing with clean water for at least 15 minutes, followed by medical evaluation. The safety data sheet for the product provides specific first-aid guidance.

Question 19Sanitation, Sterilization, and Safety Practices

Which document should a barber consult to learn the hazards, handling, and first-aid measures for a disinfectant?

  1. The manufacturer's warranty card
  2. The client's service record
  3. The shop's appointment book
  4. The safety data sheet for the product Correct answer.

Explanation

Safety data sheets provide standardized information on hazards, safe handling, protective equipment, and emergency measures for a chemical product. They should be kept accessible wherever the product is used.

Question 20Sanitation, Sterilization, and Safety Practices

How should a barber's hands be treated when gloves are not worn during a service?

  1. Sanitize hands only at the start of the day
  2. Wipe hands on the cape between clients
  3. Wash hands before and after each client and after removing gloves if used Correct answer.
  4. Rinse hands with water between clients

Explanation

Hand hygiene is performed before and after every client contact and after glove removal to prevent transfer of microorganisms. Rinsing alone or wiping on fabric does not remove pathogens.

Question 21Sanitation, Sterilization, and Safety Practices

A disinfecting solution in a soaking jar is visibly cloudy and contains hair. What does this indicate?

  1. The solution needs more water added
  2. The solution is working properly
  3. The solution has become sterile
  4. The solution is soiled and should be replaced Correct answer.

Explanation

Visible debris and cloudiness indicate that the disinfectant is contaminated with organic matter, which reduces its effectiveness. The solution should be discarded and replaced with a fresh batch according to the manufacturer's directions.

Question 22Sanitation, Sterilization, and Safety Practices

A barber is deciding whether a porous foam headrest cover can be disinfected and reused. What is the correct reasoning?

  1. Porous items become sterile once dry
  2. Porous items cannot be reliably disinfected, so the cover should be discarded after use Correct answer.
  3. Porous items only need to be brushed off
  4. Porous items can be disinfected if soaked briefly

Explanation

Porous materials trap moisture and microorganisms and cannot be reliably penetrated by disinfectants, so they are treated as single-use and discarded. Only nonporous items can be effectively cleaned and disinfected for reuse.

Question 23Sanitation, Sterilization, and Safety Practices

A shop uses a quaternary ammonium disinfectant for tools but a client's razor was exposed to blood. Why might the barber choose a different product or method?

  1. Bloodborne pathogens require a disinfectant with the appropriate efficacy and, for some items, sterilization Correct answer.
  2. Blood exposure means the tool must be thrown away in all cases
  3. Blood can be removed with plain water before disinfection
  4. Quaternary ammonium products never clean implements

Explanation

Blood exposure raises the concern of bloodborne pathogens such as hepatitis B and HIV, so the product must carry the appropriate efficacy claims and the item must be cleaned first. Some items may require sterilization rather than disinfection.

Question 24Sanitation, Sterilization, and Safety Practices

A barber notices the cord of a clipper is frayed near the plug. What is the most appropriate response?

  1. Remove the clipper from service until the cord is repaired or replaced Correct answer.
  2. Use the clipper only on dry hair
  3. Wrap the frayed area with tape and continue using it
  4. Plug it into an extension cord to reduce strain

Explanation

Frayed cords are an electrical shock and fire hazard and the equipment must be taken out of service until properly repaired or replaced. Taping over damage does not restore the insulation's safety.

Question 25Sanitation, Sterilization, and Safety Practices

A barber must choose between two disinfectants for metal shears. One is labeled for use on metal implements with a 10-minute contact time; the other is labeled for environmental surfaces only. Which is appropriate and why?

  1. The implement disinfectant, because it is labeled for tools and has a defined contact time Correct answer.
  2. Either product, because both contain the same active ingredient
  3. The surface product, because all disinfectants are interchangeable
  4. Neither product, because shears should only be washed with soap

Explanation

Disinfectants must be used according to their labeled use sites; an implement disinfectant is registered for tools and specifies the contact time needed for efficacy. A surface-only product is not intended for items that contact clients.

Question 26Sanitation, Sterilization, and Safety Practices

Which action correctly describes the process of cleaning a barber's tools before disinfection?

  1. Rinsing with water only
  2. Spraying with a disinfectant immediately
  3. Wiping with a dry cloth
  4. Scrubbing with soap and water to remove debris Correct answer.

Explanation

Cleaning is the physical removal of visible debris such as hair, skin, and product buildup, typically using soap and water. Disinfection is a separate step that kills pathogens on surfaces, but it is effective only after cleaning has removed organic matter.

Question 27Sanitation, Sterilization, and Safety Practices

What is the primary purpose of wearing disposable gloves during a barbering service?

  1. To protect the barber's hands from hair clippings
  2. To improve grip on tools
  3. To keep the barber's hands moisturized
  4. To create a barrier against bloodborne pathogens and other contaminants Correct answer.

Explanation

Gloves act as a barrier that prevents the transmission of pathogens between the barber and the client. They are especially important when contact with blood or body fluids is possible, and they must be changed between clients.

Question 28Sanitation, Sterilization, and Safety Practices

Which of the following is a correct practice for maintaining a clean and safe barbershop environment?

  1. Using the same disinfectant solution for the entire week without changing it
  2. Disposing of hair clippings and other waste in a covered receptacle after each client Correct answer.
  3. Reusing towels until they appear soiled
  4. Sweeping hair clippings into a corner at the end of the day

Explanation

Hair clippings and other waste should be placed in a covered receptacle promptly to prevent contamination and maintain a sanitary environment. Disinfectant solutions must be changed according to manufacturer instructions, and towels must be clean for each client.

Question 29Sanitation, Sterilization, and Safety Practices

When should a barber wash their hands?

  1. Only when they look dirty
  2. Only before starting work each day
  3. Only after using the restroom
  4. Before and after each client, and after removing gloves Correct answer.

Explanation

Hand hygiene is required before and after every client contact and after glove removal to prevent cross-contamination. Handwashing is a fundamental infection control practice even when gloves are worn.

Question 30Sanitation, Sterilization, and Safety Practices

A barber uses a disinfectant labeled as a tuberculocidal. Which statement best explains why this label is important?

  1. It means the product is effective against a wide range of pathogens, including those that cause tuberculosis. Correct answer.
  2. It shows the product has been diluted properly.
  3. It guarantees the product will not damage metal tools.
  4. It indicates the product is safe for use on skin.

Explanation

A tuberculocidal claim indicates the disinfectant is capable of killing Mycobacterium tuberculosis, which is more resistant than many other pathogens. This is often used as an indicator of broad-spectrum efficacy, including against bloodborne pathogens.

Question 31Sanitation, Sterilization, and Safety Practices

What is the correct procedure for disinfecting a straight razor after use?

  1. Clean the blade, then submerge it in an EPA-registered disinfectant for the labeled contact time. Correct answer.
  2. Rinse the blade with water and place it in a drawer.
  3. Wipe the blade with a dry towel and store it.
  4. Spray the blade with a disinfectant and immediately wipe it dry.

Explanation

Disinfection requires cleaning first to remove debris, then complete immersion in an EPA-registered disinfectant for the full contact time specified on the label. Immediate wiping after spraying does not allow sufficient contact time.

Question 32Sanitation, Sterilization, and Safety Practices

A barber is preparing a disinfectant solution from a concentrate. Which action is most important to ensure effectiveness?

  1. Mixing it with hot water to speed up dissolution
  2. Measuring the concentrate and water according to the manufacturer's instructions Correct answer.
  3. Adding extra concentrate to make it stronger
  4. Using a household cleaner as a substitute if the concentrate is unavailable

Explanation

Disinfectants must be diluted exactly as specified by the manufacturer; too little reduces efficacy, and too much can be hazardous or corrosive. Using the correct proportions ensures the solution achieves its labeled kill claims.

Question 33Sanitation, Sterilization, and Safety Practices

Which of the following items is considered a single-use item in barbering?

  1. A clipper guard
  2. A straight razor with a disposable blade
  3. A neck strip Correct answer.
  4. A metal comb

Explanation

Neck strips are porous and cannot be adequately disinfected, so they must be discarded after each client. Items like metal combs and clipper guards can be cleaned and disinfected for reuse.

Question 34Sanitation, Sterilization, and Safety Practices

A barber accidentally drops a pair of shears on the floor. What is the correct immediate action?

  1. Rinse them with water and continue using them.
  2. Pick them up and place them in the disinfectant solution without cleaning.
  3. Pick them up, clean them to remove debris, then disinfect them before use. Correct answer.
  4. Pick them up and continue using them after wiping with a cloth.

Explanation

Any tool that contacts the floor must be considered contaminated and must be cleaned and disinfected before reuse. Cleaning removes debris that can interfere with disinfection.

Question 35Sanitation, Sterilization, and Safety Practices

Which of the following is a correct statement about the use of an autoclave in a barbershop?

  1. An autoclave uses high-pressure steam to sterilize tools. Correct answer.
  2. An autoclave is not effective against bacteria.
  3. An autoclave uses chemicals to disinfect tools.
  4. An autoclave is only for cleaning combs.

Explanation

An autoclave sterilizes instruments by using high-pressure saturated steam at elevated temperatures. It is effective against bacteria, viruses, fungi, and spores when operated correctly.

Question 36Sanitation, Sterilization, and Safety Practices

A barber is exposed to a client's blood through a cut on their hand. What is the first action they should take?

  1. Continue the service and clean the cut later.
  2. Apply a disinfectant directly to the cut.
  3. Report the incident to the health department immediately.
  4. Wash the cut with soap and water, then apply a bandage. Correct answer.

Explanation

Immediate washing with soap and water is recommended for blood exposure on the skin. After washing, the wound should be covered with a bandage, and the incident should be documented according to workplace policy.

Question 37Sanitation, Sterilization, and Safety Practices

Which of the following best describes the proper handling of a blood-contaminated towel?

  1. Wash it with other towels without gloves.
  2. Rinse it in the sink and reuse it.
  3. Place it in a closed container labeled as biohazardous waste. Correct answer.
  4. Throw it in the regular trash.

Explanation

Items contaminated with blood must be handled as biohazardous waste and placed in appropriately labeled, closed containers. This prevents exposure to bloodborne pathogens.

Question 38Sanitation, Sterilization, and Safety Practices

A barber is selecting a disinfectant for use on clipper blades. Which factor is most critical to ensure it is appropriate?

  1. The scent of the product
  2. The EPA registration and label claims for the intended use Correct answer.
  3. The color of the disinfectant
  4. The price of the product

Explanation

Disinfectants must be EPA-registered and labeled for use on the specific type of surface or instrument. The label provides directions for effective use, including contact time and dilution.

Question 39Sanitation, Sterilization, and Safety Practices

What is the recommended procedure for cleaning and disinfecting a reusable cape between clients?

  1. Brush off hair and hang it up.
  2. Launder or clean according to fabric instructions, then use a fresh cape for each client. Correct answer.
  3. Turn it inside out and reuse.
  4. Spray with water and wipe dry.

Explanation

Reusable capes must be cleaned and disinfected or laundered between clients to prevent cross-contamination. Following fabric care instructions ensures the cape remains sanitary and in good condition.

Question 40Sanitation, Sterilization, and Safety Practices

A barber notices that a bottle of disinfectant has passed its expiration date. What is the most appropriate action?

  1. Dilute it with water to make it last longer.
  2. Dispose of it according to local regulations and replace it with a fresh product. Correct answer.
  3. Use it anyway since it is just a guideline.
  4. Add more concentrate to revive it.

Explanation

Expired disinfectants may lose potency and not achieve their labeled efficacy. They should be disposed of properly and replaced to ensure effective infection control.

Question 41Hair and Scalp Care, Shampooing, and Treatments

Which layer of the hair shaft is the outermost and consists of overlapping, scale-like cells?

  1. The cortex
  2. The cuticle Correct answer.
  3. The medulla
  4. The follicle

Explanation

The cuticle is the translucent outer layer made of overlapping scales that protects the inner structures. The cortex lies beneath it and holds pigment and strength, while the medulla is the innermost core.

Question 42Hair and Scalp Care, Shampooing, and Treatments

What is the primary role of sebum in scalp and hair health?

  1. It increases the rate of hair growth
  2. It lightens the natural pigment of the hair
  3. It lubricates the scalp and hair, helping retain moisture Correct answer.
  4. It straightens the hair by breaking disulfide bonds

Explanation

Sebum is an oily substance secreted by the sebaceous glands that coats the scalp and hair shaft, providing lubrication and helping reduce moisture loss. It does not alter pigment, break bonds, or directly control growth rate.

Question 43Hair and Scalp Care, Shampooing, and Treatments

Which hair type is naturally the most fragile and requires the gentlest handling during shampooing?

  1. Coarse, wavy hair
  2. Thick, curly hair
  3. Fine-textured hair Correct answer.
  4. Medium-textured, straight hair

Explanation

Fine hair has the smallest diameter, so it has less structural mass to resist tension and breaks more easily. Gentle detergents and light handling are recommended to avoid damage.

Question 44Hair and Scalp Care, Shampooing, and Treatments

What is the main purpose of shampooing the hair and scalp?

  1. To permanently change the hair's curl pattern
  2. To deposit color into the cortex
  3. To cleanse the scalp and remove oil, dirt, and product buildup Correct answer.
  4. To seal the cuticle for a lasting shine

Explanation

Shampoo's core function is cleansing: surfactants lift and rinse away sebum, environmental soil, and styling residue from the scalp and hair. Changing curl pattern, depositing color, and sealing the cuticle are separate services.

Question 45Hair and Scalp Care, Shampooing, and Treatments

A client has an oily scalp with dry, chemically treated ends. Which shampoo approach best serves this client?

  1. A moisturizing shampoo applied heavily to the scalp
  2. A strong clarifying shampoo used daily over the whole length
  3. A balancing shampoo concentrated on the scalp with conditioner on the ends Correct answer.
  4. A medicated antidandruff shampoo used on the ends only

Explanation

The scalp needs oil control while the porous ends need moisture, so a balancing shampoo focused on the scalp with conditioner on the ends addresses both zones. Harsh daily clarifying or heavy moisturizing on the scalp would worsen one area.

Question 46Hair and Scalp Care, Shampooing, and Treatments

Why should a shampoo be diluted and the scalp checked before a scalp treatment on a client with a sensitive scalp?

  1. To speed up the chemical action of the treatment
  2. To reduce irritation risk and confirm the scalp can tolerate the product Correct answer.
  3. To make the treatment last longer between appointments
  4. To increase the lather so less product is needed

Explanation

Sensitive scalps react more readily to concentrated surfactants and active ingredients, so diluting lowers irritation potential and a preliminary check confirms tolerance. This is a safety measure, not a way to extend results or boost lather.

Question 47Hair and Scalp Care, Shampooing, and Treatments

During a scalp massage, which stroke direction is generally recommended?

  1. In rapid back-and-forth rubbing across the forehead
  2. From the ends of the hair toward the scalp
  3. Only in a single straight line down the center of the head
  4. In small circular movements that follow the direction of muscle attachment Correct answer.

Explanation

Scalp massage uses small, rhythmic circular movements that follow the direction of the muscles and the natural hair growth pattern to relax tissue and stimulate circulation. Rapid rubbing or single-line strokes do not follow muscle direction.

Question 48Hair and Scalp Care, Shampooing, and Treatments

Which condition is characterized by flaky, silvery scales and is considered a medical scalp disorder requiring referral?

  1. Psoriasis Correct answer.
  2. Pityriasis (dandruff)
  3. Contact dermatitis
  4. Seborrheic dermatitis

Explanation

Psoriasis produces thick, silvery scales and is a medical condition that should be referred to a physician rather than treated in the salon. Dandruff is milder flaking, seborrheic dermatitis is oily and inflamed, and contact dermatitis is a reaction to a substance.

Question 49Hair and Scalp Care, Shampooing, and Treatments

A client reports intense itching, redness, and small pustules on the scalp. What is the appropriate barber's action?

  1. Continue the service but avoid rinsing the scalp
  2. Apply a strong astringent to dry the pustules
  3. Refer the client to a physician and do not perform the service Correct answer.
  4. Proceed with a medicated shampoo and massage the pustules

Explanation

Pustules with redness and itching suggest infection or inflammation beyond the barber's scope, so the client should be referred to a medical professional and the service withheld. Manipulating or treating such lesions can spread infection and worsen irritation.

Question 50Hair and Scalp Care, Shampooing, and Treatments

Which ingredient in shampoo is primarily responsible for lifting oil and dirt so they can be rinsed away?

  1. A humectant
  2. A preservative
  3. A surfactant Correct answer.
  4. A fragrance

Explanation

Surfactants have a water-loving and an oil-loving end, allowing them to surround oil and soil so water can carry them away. Humectants attract moisture, preservatives prevent spoilage, and fragrance adds scent.