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FL Barber study materials
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FL Barber practice questions

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Question 1Scientific Concepts and Practice of Barbering

Which layer forms the tough, outer protective covering of the hair shaft?

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

Explanation

The hair shaft is built of three layers: cuticle, cortex, and medulla. The cuticle is the outermost layer, made of overlapping scale-like cells that protect the inner structures.

Question 2Scientific Concepts and Practice of Barbering

The sebaceous glands attached to hair follicles secrete:

  1. An oily substance called sebum Correct answer.
  2. A hard protein called keratin
  3. Sweat containing urea
  4. Melanin pigment

Explanation

Sebaceous glands are attached to hair follicles and produce sebum, an oily substance that lubricates the skin and hair. Sweat comes from sudoriferous glands, not sebaceous glands.

Question 3Scientific Concepts and Practice of Barbering

Vellus hair is best described as:

  1. Long, coarse, and usually pigmented
  2. Hair that appears only after puberty
  3. Hair found only on the scalp
  4. Short, fine, and usually unpigmented Correct answer.

Explanation

Vellus hair is short, fine, and usually lacks pigment, and it covers much of the body. Terminal hair is the longer, coarser, pigmented type found on the scalp, beard, and other areas.

Question 4Scientific Concepts and Practice of Barbering

Universal precautions require a barber to:

  1. Treat all blood and body fluids as infectious Correct answer.
  2. Disinfect all tools once a week
  3. Wash tools with soap and water only
  4. Wear gloves only when a client asks

Explanation

Universal precautions means assuming every client's blood and certain body fluids may carry bloodborne pathogens. Precautions are used with every client, regardless of appearance or stated health status.

Question 5Scientific Concepts and Practice of Barbering

The pH scale ranges from:

  1. 1 to 10
  2. 0 to 14 Correct answer.
  3. 0 to 7
  4. 1 to 14

Explanation

The pH scale runs from 0 to 14. A pH of 7 is neutral; values below 7 are acidic and values above 7 are alkaline.

Question 6Scientific Concepts and Practice of Barbering

Alopecia is the technical term for:

  1. Excessive hair growth
  2. Abnormal hair loss Correct answer.
  3. Inflammation of the scalp
  4. Split ends along the shaft

Explanation

Alopecia means loss of hair, whether temporary or permanent, and can have many causes. Excessive hair growth is called hypertrichosis.

Question 7Scientific Concepts and Practice of Barbering

Soft water is water that:

  1. Contains very few dissolved minerals Correct answer.
  2. Contains a high level of calcium and magnesium
  3. Has been boiled to remove dissolved oxygen
  4. Has a pH above 8

Explanation

Soft water contains very few dissolved minerals, so it lathers easily with soap and shampoo. Hard water carries calcium and magnesium, which interfere with lather.

Question 8Scientific Concepts and Practice of Barbering

The outermost layer of the skin is the:

  1. Dermis
  2. Papillary layer
  3. Subcutaneous layer
  4. Epidermis Correct answer.

Explanation

Skin has three main layers: the epidermis on the outside, the dermis beneath it, and the subcutaneous layer of fat at the base. The epidermis is the thin, protective outer layer.

Question 9Scientific Concepts and Practice of Barbering

Which phase of the hair growth cycle is the active growth phase?

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

Explanation

Anagen is the growth phase, when cells in the bulb divide and the hair lengthens. Catagen is a short transitional phase, telogen is the resting phase, and exogen is shedding.

Question 10Scientific Concepts and Practice of Barbering

A barber notices that a client's hair absorbs moisture very quickly and feels rough between the fingers. This most likely indicates:

  1. Low porosity
  2. Normal elasticity
  3. A tightly closed cuticle
  4. High porosity Correct answer.

Explanation

Hair with a raised or damaged cuticle absorbs moisture quickly and feels rough; this is high porosity. Low-porosity hair resists moisture because its cuticle lies tightly closed.

Question 11Scientific Concepts and Practice of Barbering

Which pigment gives hair its brown and black colors?

  1. Hemoglobin
  2. Pheomelanin
  3. Carotene
  4. Eumelanin Correct answer.

Explanation

Melanin exists in two forms in hair: eumelanin supplies brown and black tones, while pheomelanin supplies red and blond tones. The balance between them produces the full range of natural hair colors.

Question 12Scientific Concepts and Practice of Barbering

Cell division that produces new hair takes place in the:

  1. Hair bulb Correct answer.
  2. Cuticle layer
  3. Arrector pili muscle
  4. Hair shaft

Explanation

The hair bulb at the base of the follicle contains the matrix, where cells divide. As new cells push upward they harden into the hair shaft.

Question 13Scientific Concepts and Practice of Barbering

The main purpose of a neutralizing shampoo after a chemical relaxer is to:

  1. Deposit color into the cortex and seal the cuticle
  2. Add moisture and shine and improve the hair's feel
  3. Restore the hair's natural pH and remove residue Correct answer.
  4. Raise the pH so that the relaxer keeps working

Explanation

Relaxers are strongly alkaline, so processing must be stopped by lowering the pH. A neutralizing shampoo is acidic: it removes relaxer residue, restores the hair's natural acidity, and reforms disulfide bonds.

Question 14Scientific Concepts and Practice of Barbering

Surfactants in shampoo work mainly by:

  1. Suspending oil and dirt in water Correct answer.
  2. Adding protein to the cuticle
  3. Coating the hair with a heavy film
  4. Raising the pH of the hair to neutral

Explanation

A surfactant molecule has a water-loving head and an oil-loving tail. The tails attach to oil and dirt, and the heads let water lift and rinse the soil away.

Question 15Scientific Concepts and Practice of Barbering

The frontalis muscle is responsible for:

  1. Raising the eyebrows Correct answer.
  2. Chewing food
  3. Puckering the lips
  4. Closing the eyelid

Explanation

The frontalis is the front portion of the occipitofrontalis muscle. When it contracts it raises the eyebrows and wrinkles the forehead.

Question 16Scientific Concepts and Practice of Barbering

A ringworm infection that appears in the beard area is called:

  1. Folliculitis barbae
  2. Tinea capitis
  3. Pseudofolliculitis
  4. Tinea barbae Correct answer.

Explanation

Tinea barbae is a fungal ringworm infection of the beard area. Tinea capitis is the same type of fungus affecting the scalp.

Question 17Scientific Concepts and Practice of Barbering

When the arrector pili muscle contracts, it causes:

  1. The follicle to release more sebum
  2. The hair to shed from the follicle and fall out
  3. The scalp to produce more sweat
  4. The hair to stand up and the skin to pucker Correct answer.

Explanation

The arrector pili is a small muscle attached to the hair follicle. Contraction pulls the hair upright and puckers the surrounding skin, producing goosebumps.

Question 18Scientific Concepts and Practice of Barbering

The acid mantle of the skin is a:

  1. Network of nerves in the dermis
  2. Thin protective film of oil and sweat Correct answer.
  3. Layer of dead cells that sheds continuously
  4. Pigment that screens out ultraviolet light

Explanation

The acid mantle is a thin, slightly acidic film of sebum and sweat on the skin surface, with a pH of roughly 4.5 to 5.5. It helps protect skin and hair from bacteria and keeps the hair cuticle smooth.

Question 19Scientific Concepts and Practice of Barbering

In hair analysis, texture refers to:

  1. The number of hairs per square inch
  2. The pattern in which hair grows from the scalp
  3. The diameter of an individual hair strand Correct answer.
  4. The amount of curl in the hair

Explanation

Texture describes the diameter of a single strand: fine, medium, or coarse. Density describes how many hairs grow per square inch of scalp.

Question 20Scientific Concepts and Practice of Barbering

A client has raised, red, pus-filled bumps around the hair follicles in the beard area. The barber should:

  1. Not perform the service and refer to a physician Correct answer.
  2. Disinfect the area with alcohol and proceed
  3. Shave closely to remove the affected hair
  4. Apply a warm towel and continue the haircut

Explanation

Pus-filled bumps around follicles suggest a bacterial or fungal infection. Barbering over infected skin can spread the infection and worsen the client's condition, so the service is postponed until a physician clears the client.

Question 21Scientific Concepts and Practice of Barbering

Thioglycolate relaxers straighten hair by:

  1. Breaking hydrogen bonds with water
  2. Breaking disulfide bonds in the cortex Correct answer.
  3. Coating the cuticle with a smoothing film
  4. Removing melanin from the medulla

Explanation

Thio relaxers break the disulfide bonds in the cortex, allowing the hair to be reshaped. The neutralizer then re-forms those bonds in the new, straightened position.

Question 22Scientific Concepts and Practice of Barbering

The fifth cranial nerve, which supplies sensation to the face and scalp, is the:

  1. Facial nerve
  2. Occipital nerve
  3. Cervical nerve
  4. Trigeminal nerve Correct answer.

Explanation

The trigeminal nerve, also called the fifth cranial nerve, carries sensation from the face and scalp. The seventh cranial nerve is the facial nerve, which controls muscles of facial expression.

Question 23Scientific Concepts and Practice of Barbering

Water is able to change the shape of hair temporarily because it breaks:

  1. Keratin chains
  2. Peptide bonds
  3. Disulfide bonds
  4. Hydrogen bonds Correct answer.

Explanation

Hydrogen bonds are broken by water or heat, which is why wet hair can be set and reshaped and why the style returns when it dries. Disulfide bonds are far stronger and require a chemical relaxer or permanent wave to change.

Question 24Scientific Concepts and Practice of Barbering

An implement that may have contacted blood must be disinfected with a product that is:

  1. Hospital grade and tuberculocidal Correct answer.
  2. A quaternary ammonium compound
  3. An EPA registered sanitizer
  4. At least 70 percent isopropyl alcohol

Explanation

Implements that may have contacted blood must be cleaned and then disinfected with an EPA-registered, hospital-grade disinfectant labeled tuberculocidal and effective against HIV and hepatitis B. Standard sanitizers and general-purpose disinfectants do not meet this requirement.

Question 25Scientific Concepts and Practice of Barbering

A strand of wet hair stretches and does not return to its original length. This indicates:

  1. Unusually strong disulfide bonds
  2. Excess sebum on the cuticle
  3. Normal, healthy elasticity
  4. Loss of elasticity from overprocessing Correct answer.

Explanation

Healthy wet hair stretches and springs back to its original length. Hair that stays stretched or feels gummy has a damaged cortex and poor elasticity, so chemical services should be postponed and conditioning treatments recommended.

Question 26Scientific Concepts and Practice of Barbering

On the pH scale, a value of 7 indicates that a solution is:

  1. Buffered
  2. Neutral Correct answer.
  3. Acidic
  4. Alkaline

Explanation

The pH scale runs from 0 to 14, and 7 is the midpoint. Values below 7 are acidic and values above 7 are alkaline, so 7 itself means the solution is neither acid nor alkaline.

Question 27Scientific Concepts and Practice of Barbering

Which structure is a cone-shaped elevation at the base of a hair follicle that supplies nutrients to the hair?

  1. Hair shaft
  2. Medulla
  3. Sebaceous gland
  4. Dermal papilla Correct answer.

Explanation

The dermal papilla sits at the bottom of the follicle and contains capillaries that deliver nutrients to the cells that build the hair. Without it, the follicle cannot produce new hair.

Question 28Scientific Concepts and Practice of Barbering

The bone that forms the forehead is the:

  1. Frontal bone Correct answer.
  2. Parietal bone
  3. Temporal bone
  4. Occipital bone

Explanation

The frontal bone forms the forehead and the upper portion of the eye sockets. The parietal, temporal, and occipital bones make up other regions of the cranium.

Question 29Scientific Concepts and Practice of Barbering

From the outside inward, the three layers of a hair shaft are:

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

Explanation

The cuticle is the tough outer covering, the cortex is the middle layer that holds pigment and gives strength and elasticity, and the medulla is the innermost core.

Question 30Scientific Concepts and Practice of Barbering

The process that destroys all microorganisms, including bacterial spores, on an implement is called:

  1. Sterilization Correct answer.
  2. Disinfection
  3. Decontamination
  4. Sanitizing

Explanation

Sterilization destroys all microbial life, including spores, and represents the highest level of decontamination. Disinfection destroys most pathogens but not necessarily spores.

Question 31Scientific Concepts and Practice of Barbering

Bacteria that cause disease are called:

  1. Saprophytic
  2. Nonpathogenic
  3. Beneficial
  4. Pathogenic Correct answer.

Explanation

Pathogenic bacteria are the disease-causing group. Nonpathogenic and saprophytic bacteria are harmless or helpful, and some are used to make foods such as yogurt.

Question 32Scientific Concepts and Practice of Barbering

Which massage movement consists of light, continuous, gliding strokes?

  1. Petrissage
  2. Tapotement
  3. Friction
  4. Effleurage Correct answer.

Explanation

Effleurage is a light gliding stroke used to begin and end a massage and to spread product over the skin. Petrissage is kneading, tapotement is tapping, and friction uses circular pressure.

Question 33Scientific Concepts and Practice of Barbering

The number of hairs per square inch on the head is called hair:

  1. Density Correct answer.
  2. Porosity
  3. Elasticity
  4. Stream

Explanation

Density refers to how many hairs grow per square inch of scalp. Porosity describes the ability to absorb moisture, elasticity describes stretching and returning, and a stream is the direction of growth.

Question 34Scientific Concepts and Practice of Barbering

Applying relaxer over previously relaxed hair during a retouch most likely causes:

  1. Overprocessing and breakage Correct answer.
  2. Better color retention
  3. Faster processing
  4. Cleaner results

Explanation

Relaxer is applied only to new growth because previously relaxed hair has already been chemically straightened. A second application over-processes it, leaving the hair weak and prone to breakage.

Question 35Scientific Concepts and Practice of Barbering

Before a shaving service, a warm towel is applied to the face mainly to:

  1. Harden the hair
  2. Close the pores
  3. Numb the skin
  4. Soften the hair Correct answer.

Explanation

Warmth and moisture soften the hair and relax the skin so the razor cuts more easily and irritates the skin less. The towel does not numb the skin or change the size of pores.

Question 36Scientific Concepts and Practice of Barbering

A patch test is performed before a chemical service to find out whether the client has:

  1. A contagious disease
  2. A scalp injury
  3. An allergy to the product Correct answer.
  4. Enough hair length

Explanation

A patch test checks for an allergic reaction by applying a small amount of product to the skin and observing the area. It does not screen for infections, measure hair length, or diagnose injuries.

Question 37Scientific Concepts and Practice of Barbering

A product that is applied to the skin to reduce the number of bacteria is called a(n):

  1. Fumigant
  2. Disinfectant
  3. Sterilizer
  4. Antiseptic Correct answer.

Explanation

Antiseptics are formulated for use on skin. Disinfectants are meant for implements and surfaces, sterilizers destroy all microbial life, and fumigants treat enclosed spaces.

Question 38Scientific Concepts and Practice of Barbering

The resting phase of the hair growth cycle, after which the hair is shed, is called:

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

Explanation

Telogen is the resting phase, lasting roughly three months, at the end of which the hair falls out and a new hair begins to form in the follicle.

Question 39Scientific Concepts and Practice of Barbering

Which layer of the skin contains the hair follicles, sweat glands, and blood vessels?

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

Explanation

The dermis is the inner layer that houses follicles, glands, nerves, and blood vessels. The epidermis is the outer layer and contains no blood vessels.

Question 40Scientific Concepts and Practice of Barbering

Hydrogen peroxide lightens hair by:

  1. Closing the cuticle
  2. Coating the hair shaft
  3. Adding moisture
  4. Oxidizing melanin pigment Correct answer.

Explanation

Hydrogen peroxide is an oxidizing agent that breaks down melanin so the hair reflects more light and appears lighter. It does not coat the hair, close the cuticle, or add moisture.

Question 41Scientific Concepts and Practice of Barbering

Treating all blood and body fluids as if they were infectious is known as:

  1. Standard precautions Correct answer.
  2. Sterilization
  3. Sanitation
  4. Isolation

Explanation

Standard precautions require that blood and body fluids be handled as potentially infectious regardless of what is known about the client's health status. This protects both the barber and the client.

Question 42Scientific Concepts and Practice of Barbering

A current that flows in one direction only is called:

  1. Alternating current
  2. Direct current Correct answer.
  3. Rectified current
  4. Static current

Explanation

Direct current flows in a single direction, as from a battery. Alternating current reverses direction many times per second.

Question 43Scientific Concepts and Practice of Barbering

A dry, flaky condition of the scalp that is not contagious is:

  1. Tinea capitis
  2. Pediculosis
  3. Dandruff Correct answer.
  4. Folliculitis

Explanation

Dandruff is a scaling condition of the scalp that is not contagious and can usually be managed with medicated shampoo. Tinea capitis and pediculosis are both contagious.

Question 44Scientific Concepts and Practice of Barbering

The main purpose of a conditioner is to:

  1. Open the cuticle for color
  2. Increase hair density
  3. Remove product buildup
  4. Smooth the cuticle Correct answer.

Explanation

Conditioners coat and smooth the cuticle, which reduces friction and static and makes hair easier to comb. They do not change the number of hairs or open the cuticle.

Question 45Scientific Concepts and Practice of Barbering

The medical term for a wart is:

  1. Verruca Correct answer.
  2. Furuncle
  3. Keloid
  4. Cyst

Explanation

A verruca is a wart caused by a virus, and it is contagious. A furuncle is a boil, a keloid is an overgrown scar, and a cyst is a closed sac under the skin.

Question 46Scientific Concepts and Practice of Barbering

A barber finishes a haircut with clippers that may have contacted a client's blood. Which sequence is correct?

  1. Spray with disinfectant, then brush out the hair
  2. Clean with soap and water, then disinfect Correct answer.
  3. Rinse with water, then spray with disinfectant
  4. Wipe with a dry towel, then store

Explanation

Visible debris must be removed before disinfection because soil prevents the disinfectant from reaching the surface. After cleaning and drying, the clippers are treated with an EPA-registered hospital disinfectant for the full contact time on the label.

Question 47Scientific Concepts and Practice of Barbering

Which cranial nerve supplies the muscles of facial expression?

  1. Tenth cranial (vagus)
  2. Seventh cranial (facial) Correct answer.
  3. Fifth cranial (trigeminal)
  4. Eleventh cranial (accessory)

Explanation

The seventh cranial nerve, the facial nerve, is the motor nerve for the muscles of facial expression. The fifth cranial nerve is the chief sensory nerve of the face.

Question 48Scientific Concepts and Practice of Barbering

A shampoo has a pH of 8.5. Used on hair, it would most likely:

  1. Leave the hair unchanged
  2. Restore natural acidity
  3. Swell the hair shaft Correct answer.
  4. Tighten the cuticle

Explanation

Hair is naturally slightly acidic, and an alkaline product raises its pH. The cuticle then lifts and the shaft swells, which can leave the hair rough and more fragile.

Question 49Scientific Concepts and Practice of Barbering

Why can a sodium hydroxide relaxer cause chemical burns if left on the scalp too long?

  1. It reacts with water to release alcohol
  2. It coats the skin and traps heat
  3. It is a strong alkali that breaks down protein Correct answer.
  4. It is a strong acid that dissolves the cuticle

Explanation

Sodium hydroxide is a strong alkali with a high pH, and prolonged contact breaks down the protein of skin as well as hair. That is why the product is timed carefully and kept off the scalp except during the brief application period.

Question 50Scientific Concepts and Practice of Barbering

A solution with a pH of 10 is how many times more alkaline than a solution with a pH of 7?

  1. 100 times
  2. 10 times
  3. 3 times
  4. 1,000 times Correct answer.

Explanation

The pH scale is logarithmic, so each whole unit represents a tenfold change. A difference of three units, from 7 to 10, means 10 × 10 × 10, or 1,000 times more alkaline.