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ND Barber practice questions

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Question 1Scientific Foundations and Basic Sciences

Which layer of the skin contains the hair follicle, sebaceous gland, and sweat gland?

  1. Dermis Correct answer.
  2. Epidermis
  3. Subcutaneous layer
  4. Stratum corneum

Explanation

The dermis is the connective-tissue layer beneath the epidermis that houses hair follicles, sebaceous glands, sweat glands, and nerve endings. The epidermis is avascular surface epithelium, and the subcutaneous layer is primarily adipose tissue below the dermis.

Question 2Scientific Foundations and Basic Sciences

A client with a fresh cut and active bleeding arrives for a haircut. What is the most appropriate barbering action?

  1. Wipe the area and begin the service
  2. Cut around the area and continue
  3. Proceed after applying styptic powder
  4. Postpone the service until the skin is healed Correct answer.

Explanation

Broken skin with active bleeding is a contraindication for barbering services because of infection risk to both client and barber. The service should be deferred until the skin is intact. Styptic powder is for minor nicks during shaving, not for an active wound before service.

Question 3Scientific Foundations and Basic Sciences

Which muscle is responsible for raising the front of the scalp and wrinkling the forehead?

  1. Occipitalis
  2. Temporalis
  3. Masseter
  4. Frontalis Correct answer.

Explanation

The frontalis is the anterior portion of the epicranius muscle and draws the scalp forward, wrinkling the forehead. The occipitalis pulls the scalp backward, the temporalis elevates the jaw, and the masseter closes the jaw.

Question 4Scientific Foundations and Basic Sciences

Which type of hair is typically the coarsest and most tightly curled?

  1. Vellus hair
  2. Intermediate hair
  3. Lanugo hair
  4. Terminal hair Correct answer.

Explanation

Terminal hair is the long, coarse, pigmented hair found on the scalp, eyebrows, and, after puberty, the beard and body. Vellus hair is short, fine, and unpigmented, and lanugo is the fine prenatal hair that is normally shed before birth.

Question 5Scientific Foundations and Basic Sciences

What is the primary purpose of a patch test before applying an aniline-derivative tint?

  1. To measure processing time
  2. To confirm the developer strength
  3. To detect an allergic sensitivity to the product Correct answer.
  4. To check the color result on the hair

Explanation

A patch test identifies whether a client is sensitized to an ingredient such as an aniline derivative, allowing the barber to avoid a severe allergic reaction. It does not predict color outcome, processing time, or developer choice.

Question 6Scientific Foundations and Basic Sciences

Which pH value indicates a product that is neutral?

  1. 7 Correct answer.
  2. 9
  3. 12
  4. 3

Explanation

The pH scale runs from 0 to 14, with 7 being neutral. Values below 7 are acidic and values above 7 are alkaline, so 3 is acidic while 9 and 12 are alkaline.

Question 7Scientific Foundations and Basic Sciences

Which of the following is a disposable item that must be discarded after a single client?

  1. Straight razor handle
  2. Metal clipper guard
  3. Neck strip Correct answer.
  4. Styptic pencil

Explanation

A neck strip is a single-use paper barrier and must be discarded after each client. Razor handles, clipper guards, and styptic pencils are reusable items that require cleaning or disinfection between clients.

Question 8Scientific Foundations and Basic Sciences

Which of these is a primary function of the sebaceous gland?

  1. Produce melanin for pigmentation
  2. Secrete sebum to lubricate skin and hair Correct answer.
  3. Produce sweat for cooling
  4. Generate new epidermal cells

Explanation

Sebaceous glands secrete sebum, an oily substance that lubricates the skin and hair and helps retain moisture. Sweat comes from sudoriferous glands, melanin comes from melanocytes, and new epidermal cells arise from the basal layer.

Question 9Scientific Foundations and Basic Sciences

A client's hair has a strong yellow cast after lightening. Which color can be used to neutralize this unwanted tone?

  1. Red
  2. Violet Correct answer.
  3. Orange
  4. Green

Explanation

Yellow and violet are complementary colors on the color wheel, so a violet-based toner neutralizes unwanted yellow. Green neutralizes red, and orange neutralizes blue.

Question 10Scientific Foundations and Basic Sciences

Which statement best describes the anagen phase of the hair growth cycle?

  1. It is the transitional phase of a few weeks
  2. It is the phase when the follicle produces only vellus hair
  3. It is the resting phase when hair sheds
  4. It is the active growth phase lasting several years Correct answer.

Explanation

Anagen is the active growth phase, lasting roughly two to seven years on the scalp. Catagen is the short transitional phase, and telogen is the resting phase that ends in shedding.

Question 11Scientific Foundations and Basic Sciences

A client has a fungal infection on the scalp. Which action is correct for the barber?

  1. Cut the hair very short and proceed
  2. Refer the client to a physician and decline service Correct answer.
  3. Provide the haircut with gloves and a cape
  4. Apply medicated shampoo and proceed

Explanation

Contagious scalp conditions such as fungal infections are contraindications for service, and the client should be referred to a physician. Providing service with gloves or cutting hair short does not eliminate transmission risk.

Question 12Scientific Foundations and Basic Sciences

Which describes the correct relationship between an acid and a base?

  1. An acid donates a proton; a base accepts a proton Correct answer.
  2. Both acids and bases donate protons
  3. An acid has a pH above 7; a base has a pH below 7
  4. An acid accepts a proton; a base donates a proton

Explanation

In the Brønsted-Lowry model, an acid is a proton donor and a base is a proton acceptor. This matches the pH scale, where acids fall below 7 and bases above 7.

Question 13Scientific Foundations and Basic Sciences

Which of the following best describes the function of the arrector pili muscle?

  1. It contracts to raise the hair and causes goose bumps Correct answer.
  2. It provides pigment to the hair shaft
  3. It anchors the hair bulb to the dermis
  4. It produces sebum for the follicle

Explanation

The arrector pili is a small smooth muscle attached to the follicle that contracts in response to cold or emotion, raising the hair and producing goose bumps. Sebum comes from the sebaceous gland, and pigment comes from melanocytes in the bulb.

Question 14Scientific Foundations and Basic Sciences

A client's hair is described as having low porosity. How should the barber expect it to behave during chemical service?

  1. It absorbs moisture quickly and processes rapidly
  2. It resists moisture and may require longer processing Correct answer.
  3. It holds no curl and must be cut off
  4. It cannot be colored at all

Explanation

Low-porosity hair has a tightly closed cuticle that resists moisture uptake, so chemical products may need more time or heat to penetrate. High-porosity hair absorbs and releases moisture rapidly.

Question 15Scientific Foundations and Basic Sciences

Which structure supplies blood and nutrients to the hair bulb?

  1. Cortex
  2. Cuticle
  3. Medulla
  4. Papilla Correct answer.

Explanation

The dermal papilla at the base of the follicle contains capillaries that supply blood and nutrients to the hair bulb. The medulla, cortex, and cuticle are the three layers of the hair shaft itself.

Question 16Scientific Foundations and Basic Sciences

Which statement about disinfectants is correct for barbering tools?

  1. Disinfectants must be rinsed with water before use on hair
  2. Disinfectants are the same as sanitizers and only remove debris
  3. Disinfectants are used on skin before shaving
  4. Disinfectants kill most pathogenic organisms on nonporous surfaces Correct answer.

Explanation

Disinfectants are chemicals that destroy or inhibit most pathogenic microorganisms on hard, nonporous surfaces. Sanitizers reduce contaminants but do not necessarily kill pathogens, and skin preparation requires antiseptics.

Question 17Scientific Foundations and Basic Sciences

What is the correct order of the three layers of the hair shaft, from outside to inside?

  1. Medulla, cortex, cuticle
  2. Cuticle, cortex, medulla Correct answer.
  3. Cuticle, medulla, cortex
  4. Cortex, cuticle, medulla

Explanation

The hair shaft has three layers: the outer cuticle, the middle cortex, and the innermost medulla. The cuticle protects the shaft, the cortex holds pigment and strength, and the medulla is the central core.

Question 18Scientific Foundations and Basic Sciences

A client with a nickel allergy reports a reaction after a clipper trim. Which factor is the most likely cause?

  1. The pH of the shampoo
  2. The client's hair porosity
  3. The clipper blade's metal content Correct answer.
  4. The developer strength used

Explanation

Nickel allergy is a contact sensitivity to nickel, which is present in many metal alloys used in clipper blades and other tools. Hair porosity, developer strength, and shampoo pH do not cause a metal contact allergy.

Question 19Scientific Foundations and Basic Sciences

Which of the following correctly describes the role of the melanocyte in hair color?

  1. It produces sebum for the follicle
  2. It produces melanin pigment transferred to the cortex Correct answer.
  3. It produces keratin for the hair shaft
  4. It provides structural support to the follicle

Explanation

Melanocytes in the hair bulb synthesize melanin, which is transferred to the cortex and determines natural hair color. Keratin is structural protein, sebum comes from sebaceous glands, and follicle support comes from connective tissue.

Question 20Scientific Foundations and Basic Sciences

A client's scalp shows patchy hair loss with a smooth, shiny surface and no visible inflammation. What is the most appropriate barbering response?

  1. Refer the client to a physician before service Correct answer.
  2. Color the area to conceal the loss
  3. Apply a scalp massage to stimulate growth
  4. Recommend a medicated shampoo and proceed

Explanation

Patchy, smooth hair loss can indicate an underlying medical condition such as alopecia areata, and barbers cannot diagnose it. The correct action is referral to a physician rather than treating or concealing the condition.

Question 21Scientific Foundations and Basic Sciences

A client with a known aniline-derivative allergy requests a permanent tint. What is the best course of action?

  1. Perform a patch test and proceed regardless of result
  2. Decline the tint and offer a non-oxidative alternative Correct answer.
  3. Use a stronger developer to shorten contact time
  4. Apply the tint only to the mid-lengths

Explanation

A known aniline-derivative allergy is a contraindication for oxidative hair color, and the barber should decline the service and discuss alternatives. A patch test does not make the service safe for a client with an established allergy, and developer strength does not prevent allergic reaction.

Question 22Scientific Foundations and Basic Sciences

Two products are compared: one has a pH of 4.5 and one has a pH of 9.5. Which statement best explains their effect on the hair cuticle?

  1. The pH 4.5 product tends to tighten the cuticle; the pH 9.5 product tends to swell it Correct answer.
  2. Neither product affects the cuticle
  3. The pH 9.5 product tightens the cuticle; the pH 4.5 product swells it
  4. Both products tighten the cuticle equally

Explanation

Acidic products close and tighten the cuticle, improving shine and reducing swelling, while alkaline products raise the cuticle and swell the hair shaft. This is why alkaline chemical services open the cuticle for penetration.

Question 23Scientific Foundations and Basic Sciences

A client reports scalp itching, redness, and flaking that worsens after each haircut. Which analysis best guides the barber's next step?

  1. The symptoms confirm dry scalp and the service should continue
  2. The symptoms are normal and require no action
  3. The symptoms indicate the client needs a stronger shampoo
  4. The symptoms suggest a contagious condition and the client should be referred Correct answer.

Explanation

Itching, redness, and flaking that recur can indicate a contagious or inflammatory scalp condition, which barbers cannot diagnose. Referring the client protects both parties and avoids spreading infection.

Question 24Scientific Foundations and Basic Sciences

Which statement correctly explains why a high-porosity hair may lose color faster than low-porosity hair?

  1. The cortex lacks melanin entirely
  2. The medulla absorbs all the color
  3. The cuticle is tightly closed and resists moisture loss
  4. The cuticle is raised, allowing pigment and moisture to escape Correct answer.

Explanation

High-porosity hair has a raised or damaged cuticle that allows moisture and color molecules to escape more easily, causing faster fading. Low-porosity hair has a tightly closed cuticle that resists both absorption and loss.

Question 25Scientific Foundations and Basic Sciences

Which layer of the skin contains the hair follicle, sebaceous glands, and sweat glands?

  1. Epidermis
  2. Stratum corneum
  3. Subcutaneous layer
  4. Dermis Correct answer.

Explanation

The dermis is the middle layer of skin and houses the hair follicles, sebaceous glands, sweat glands, and nerve endings that barbers interact with during every service. The epidermis is the thin outer protective layer, and the subcutaneous layer is mostly fat and connective tissue below the dermis.

Question 26Scientific Foundations and Basic Sciences

A barber is examining a client's scalp and identifies fine, downy hair covering the forehead area. What is the correct term for this hair type?

  1. Lanugo hair
  2. Terminal hair
  3. Vellus hair Correct answer.
  4. Catagen hair

Explanation

Vellus hair is short, fine, and lightly pigmented and covers much of the body, including the forehead and cheeks. Terminal hair is the longer, coarser, pigmented hair found on the scalp, eyebrows, and beard areas after puberty.

Question 27Scientific Foundations and Basic Sciences

Which portion of the hair is the living, actively dividing region that produces new hair cells?

  1. Hair shaft
  2. Medulla
  3. Hair bulb Correct answer.
  4. Cuticle

Explanation

The hair bulb is the rounded, club-shaped structure at the base of the follicle that contains the matrix, where cells divide and keratinize to form the hair. The shaft is the visible portion above the skin, and the cuticle is the outer protective layer of the shaft.

Question 28Scientific Foundations and Basic Sciences

Which of the following is the correct definition of a contagious disease?

  1. A disease caused only by genetic inheritance
  2. A disease limited to the skin surface without spread
  3. A disease that affects only the nervous system
  4. A disease that can be transmitted from one person to another Correct answer.

Explanation

A contagious, or communicable, disease is one caused by a pathogen that can be passed from person to person through direct or indirect contact. Barbers must recognize these conditions because they determine whether a service can safely proceed.

Question 29Scientific Foundations and Basic Sciences

Which of the following is a physical characteristic of hair that a barber should assess before a chemical service?

  1. The client's favorite hairstyle
  2. The client's hair texture and porosity Correct answer.
  3. The client's occupation
  4. The client's preferred appointment time

Explanation

Texture and porosity directly influence how hair absorbs and retains chemical products, so they must be assessed before any relaxer, color, or permanent wave. Occupation and preferences may inform styling choices but do not predict chemical behavior.

Question 30Scientific Foundations and Basic Sciences

A barber notices that a client's hair has a rough, raised cuticle layer and tangles easily. Which hair property does this most likely indicate?

  1. High density
  2. Low porosity
  3. Normal elasticity
  4. High porosity Correct answer.

Explanation

A raised, rough cuticle allows moisture and chemicals to enter and escape quickly, which is the hallmark of high porosity. Low-porosity hair has a tightly closed cuticle that resists penetration and tends to feel smooth.

Question 31Scientific Foundations and Basic Sciences

A client with a scalp that is oily and has a strong odor is scheduled for a haircut. Which gland's activity is most directly responsible for this condition?

  1. Sweat gland
  2. Thyroid gland
  3. Lacrimal gland
  4. Sebaceous gland Correct answer.

Explanation

Sebaceous glands secrete sebum, an oily substance that lubricates the skin and hair; overactivity produces excess oil and can contribute to odor when combined with bacteria. Sweat glands produce perspiration, which is watery rather than oily.

Question 32Scientific Foundations and Basic Sciences

A barber is preparing a disinfectant solution for combs and shears. Which practice best ensures the solution remains effective?

  1. Following the manufacturer's contact time and dilution instructions Correct answer.
  2. Mixing two disinfectants to increase strength
  3. Storing the solution in an open container near heat
  4. Reusing the solution until it looks cloudy

Explanation

Disinfectants must be mixed at the label's specified concentration and left in contact with tools for the full required time to kill pathogens. Reusing or improperly storing solution reduces efficacy and can spread contamination.

Question 33Scientific Foundations and Basic Sciences

A barber is about to perform a shave on a client with a small, raised, reddish lesion on the lip that is not bleeding. What is the most appropriate action?

  1. Refer the client to a physician and decline the service Correct answer.
  2. Shave carefully around the lesion without comment
  3. Apply a disinfectant directly to the lesion
  4. Proceed with the shave as usual

Explanation

A raised, reddish lesion on or near the lip may indicate a contagious condition such as herpes simplex or another medical concern. Barbers should not diagnose, but they should refrain from service and refer the client to a physician.

Question 34Scientific Foundations and Basic Sciences

Which statement correctly describes the relationship between the medulla, cortex, and cuticle in a hair strand?

  1. The cuticle is the innermost layer, surrounded by the cortex and medulla.
  2. The medulla is the outermost layer, and the cuticle is the core.
  3. The cortex is the outermost layer, and the cuticle lies within the medulla.
  4. The medulla is the core, surrounded by the cortex, which is covered by the cuticle. Correct answer.

Explanation

A hair strand is organized with the medulla at the center, the cortex surrounding it, and the cuticle as the outer protective covering. This arrangement matters because color and chemical changes occur primarily in the cortex.

Question 35Scientific Foundations and Basic Sciences

A barber is mixing a temporary color product and needs to understand how it differs from a permanent tint. Which statement best describes a temporary color?

  1. It requires a developer to lift the natural pigment.
  2. It lightens the hair by removing melanin.
  3. It deposits large color molecules on the cuticle surface and washes out with shampoo. Correct answer.
  4. It enters the cortex and becomes trapped there permanently.

Explanation

Temporary colors use large molecules that sit on the outside of the cuticle and are removed by shampooing, so they do not alter the hair's internal structure. Permanent tints require a developer and penetrate the cortex to deposit or lift pigment.

Question 36Scientific Foundations and Basic Sciences

A client's hair is tested and stretches significantly before breaking and does not return to its original length. What does this indicate about the hair?

  1. The hair is resistant and requires a stronger relaxer.
  2. The hair has low elasticity and is likely overprocessed. Correct answer.
  3. The hair has high porosity and needs more processing.
  4. The hair has normal elasticity and is healthy.

Explanation

Healthy hair stretches about half its length and returns to shape; hair that stretches too far without returning has low elasticity and is often damaged or overprocessed. Chemical services should be avoided or modified on such hair to prevent further breakage.

Question 37Scientific Foundations and Basic Sciences

Which statement correctly explains why a patch test is performed before applying a permanent tint containing aniline derivatives?

  1. It measures the hair's porosity before coloring.
  2. It checks the client's skin for an allergic reaction to the product. Correct answer.
  3. It determines how long the color should process.
  4. It confirms the tint will produce the desired shade.

Explanation

A patch test applies a small amount of product to the skin to detect an allergic sensitivity before a full application. It does not predict shade outcome, porosity, or processing time.

Question 38Scientific Foundations and Basic Sciences

A client's hair appears to have a greenish cast after a color service. Based on color theory, which approach best explains how to correct an unwanted tone?

  1. Apply a color adjacent to the unwanted tone on the color wheel.
  2. Apply the same tone at a darker level.
  3. Apply a color that matches the unwanted tone.
  4. Apply a color opposite the unwanted tone on the color wheel. Correct answer.

Explanation

Neutralizing an unwanted tone relies on complementary, or opposite, colors on the color wheel, such as red opposite green. Applying an adjacent or matching tone would reinforce rather than cancel the unwanted cast.

Question 39Scientific Foundations and Basic Sciences

A barber is reviewing the growth cycle and notes that a client's hair sheds more than usual. Which phase is primarily associated with hair shedding?

  1. Telogen Correct answer.
  2. Keratinization
  3. Catagen
  4. Anagen

Explanation

Telogen is the resting phase, at the end of which the hair is shed and replaced by new growth. Anagen is the active growth phase, and catagen is the transitional phase between growth and rest.

Question 40Scientific Foundations and Basic Sciences

A barber is evaluating a client's scalp and observes a dry, flaky condition with small white scales that are not greasy. Which condition is most consistent with this presentation?

  1. Pityriasis steatoides
  2. Pityriasis capitis Correct answer.
  3. Folliculitis
  4. Tinea barbae

Explanation

Pityriasis capitis, or dandruff, presents as dry, white, flaky scales on the scalp without greasiness. Pityriasis steatoides involves greasy, yellowish scales, while tinea barbae and folliculitis involve infection and inflammation.

Question 41Clinical Assessment and Diagnosis

During a new-client consultation, a barber notices inflamed, pustule-like lesions with ingrown hairs across the beard area, and the client reports tenderness. Which condition should the barber recognize, and what is the appropriate service response?

  1. Pseudofolliculitis barbae; exfoliate aggressively with a stiff brush before shaving
  2. Folliculitis barbae; avoid shaving the affected area and refer the client to a physician Correct answer.
  3. Seborrheic dermatitis; treat with a hot towel compress and continue the service
  4. Tinea barbae; proceed with a full beard shave and apply astringent

Explanation

Folliculitis barbae presents as inflamed, sometimes pustular lesions around hair follicles and is often aggravated by close shaving or contaminated tools. Because it is an infection-prone inflammatory condition, the barber should not shave over the area and should refer the client for medical evaluation.

Question 42Clinical Assessment and Diagnosis

A client's scalp shows sharply defined, silvery-white scales on erythematous plaques that extend slightly beyond the hairline. Which assessment finding most supports plaque psoriasis rather than seborrheic dermatitis?

  1. Diffuse fine white flakes with no redness
  2. Patchy hair loss with black dot stubs
  3. Silvery scale on well-demarcated plaques extending past the hairline Correct answer.
  4. Greasy yellow scale concentrated on the central scalp

Explanation

Plaque psoriasis is characterized by well-demarcated erythematous plaques covered with silvery-white scale and often extends beyond the hairline onto adjacent skin. Seborrheic dermatitis instead shows greasy yellowish scale in oily areas such as the central scalp and nasolabial folds.

Question 43Clinical Assessment and Diagnosis

Which finding during a scalp examination is the most reliable indicator that a client should be referred for suspected tinea capitis?

  1. Fine white flakes evenly distributed across the crown
  2. Circular patches of broken hairs with scaling and possible lymph node swelling Correct answer.
  3. Oily scalp with mild itching after exercise
  4. Temporary redness along the part line after tight braiding

Explanation

Tinea capitis is a fungal infection of the scalp that commonly produces circular scaly patches with broken or stubbled hairs and may involve tender lymph nodes. These findings warrant medical referral because topical barbering products cannot treat a fungal scalp infection.

Question 44Clinical Assessment and Diagnosis

A client reports intense itching, and the barber observes tiny grayish specks attached to hair shafts near the nape, along with excoriations. What is the most appropriate action?

  1. Trim only the ends and schedule a follow-up in one week
  2. Discontinue the service, sanitize tools, and advise the client to seek treatment for suspected pediculosis Correct answer.
  3. Shampoo the scalp with a conditioning treatment and proceed with the service
  4. Apply a scalp astringent and continue cutting the hair dry

Explanation

Nits attached to hair shafts plus intense itching and scratch marks strongly suggest pediculosis capitis, which is contagious through shared tools and close contact. The barber should stop the service, disinfect implements and linens, and refer the client for appropriate treatment before returning.

Question 45Clinical Assessment and Diagnosis

Which description best matches the appearance of alopecia areata on a scalp assessment?

  1. Irregular scarring with permanent follicle destruction
  2. Diffuse thinning along the frontal hairline with miniaturized hairs
  3. Widespread scaling with broken hairs and crusting
  4. Smooth, sharply circumscribed round patches of complete hair loss Correct answer.

Explanation

Alopecia areata typically presents as smooth, well-circumscribed round or oval patches of non-scarring hair loss, often without visible inflammation. The patches are distinct from the patterned thinning of androgenetic alopecia and from the scaling of infectious causes.

Question 46Clinical Assessment and Diagnosis

A client with tightly coiled hair shows small firm bumps on the posterior neck that appeared after a fresh, close lineup. Which assessment conclusion is most accurate?

  1. The bumps are razor bumps caused by hair re-entering the skin, so further close shaving of the area should be avoided Correct answer.
  2. The bumps are a normal reaction that should be shaved over to expose the hair
  3. The bumps indicate a bacterial infection requiring immediate drainage by the barber
  4. The bumps indicate a fungal infection that will resolve with a medicated shampoo

Explanation

Pseudofolliculitis barbae results when tightly curled hairs are cut close and then re-enter the skin, producing firm papules sometimes called razor bumps. The barber should avoid further close shaving over the area and discuss shaving technique or referral if inflammation persists.

Question 47Clinical Assessment and Diagnosis

Which client statement during intake most strongly suggests a possible contagious skin condition that should prompt deferral of the service?

  1. My scalp gets oily by the second day after washing
  2. I have a few dry flakes on my shoulders in winter
  3. My hair has been thinning gradually at the temples
  4. I have an itchy rash on my scalp that my roommate also developed Correct answer.

Explanation

An itchy scalp rash shared with a household member raises concern for a communicable condition such as a fungal infection or infestation. Deferring service and referring for diagnosis protects other clients and prevents tool contamination.

Question 48Clinical Assessment and Diagnosis

During a beard trim, the barber notices a cluster of fluid-filled blisters on an erythematous base near the upper lip. What is the most appropriate clinical response?

  1. Apply a hot towel and shave closely around the lesions
  2. Continue the service and simply wipe the area with alcohol
  3. Stop the service, avoid contact with the lesions, and refer the client for evaluation of a possible viral infection Correct answer.
  4. Pop the blisters with a sanitized comb and continue the trim

Explanation

Grouped vesicles on an erythematous base suggest a viral infection such as herpes simplex, which can be transmitted by direct contact and contaminated implements. The barber should stop, avoid touching the lesions, disinfect or set aside tools, and refer the client for medical assessment.

Question 49Clinical Assessment and Diagnosis

Which term describes the soft, fine, unpigmented hair that covers much of the body before puberty and is largely replaced by terminal hair in androgen-sensitive areas?

  1. Catagen hair
  2. Terminal hair
  3. Lanugo hair
  4. Vellus hair Correct answer.

Explanation

Vellus hair is short, fine, and lightly pigmented, and it covers much of the body. Under androgen influence, vellus follicles in certain areas transform into longer, thicker, pigmented terminal hairs.

Question 50Clinical Assessment and Diagnosis

In the hair growth cycle, which phase is characterized by active growth and the longest duration on the scalp?

  1. Anagen Correct answer.
  2. Exogen
  3. Catagen
  4. Telogen

Explanation

Anagen is the active growth phase and lasts the longest on the scalp, typically several years. The length of anagen largely determines how long a person's hair can grow before the follicle transitions to catagen and telogen.