Certified Hair Stylist (CHS) — Questions and Answers

Question 1: What does 'pH balanced' mean on a hair product label?

The product has been tested for color safety
The product has a neutral pH of 7
The product contains no sulfates
The product's pH is close to the natural pH of hair and scalp (4.5–5.5) (Correct answer)

Correct answer: The product's pH is close to the natural pH of hair and scalp (4.5–5.5)

pH-balanced hair products are formulated near the hair's natural acidic range of 4.5–5.5, which helps maintain a smooth, closed cuticle.

Question 2: What does 'accounts receivable' represent for a salon?

Money owed to the salon by clients or insurance companies for services already rendered (Correct answer)
Money the salon owes to product suppliers
The total value of retail inventory on hand
Monthly lease payments owed to the landlord

Correct answer: Money owed to the salon by clients or insurance companies for services already rendered

Accounts receivable represents money clients owe the salon for services already provided but not yet paid for, such as corporate billing arrangements.

Question 3: What is the correct blow-drying technique to minimize frizz on curly hair?

High heat with a paddle brush
Low heat with a diffuser attachment (Correct answer)
Medium heat with a vent brush
High heat with no attachment

Correct answer: Low heat with a diffuser attachment

A diffuser attachment disperses airflow to dry curls gently without disrupting their pattern, minimizing frizz.

Question 4: Which structure at the base of the hair follicle supplies oxygen and nutrients to actively growing hair?

Capillary network in the dermal papilla (Correct answer)
Lymphatic vessel in the cortex
Arrector pili muscle
Sebaceous gland duct

Correct answer: Capillary network in the dermal papilla

A rich capillary network within the dermal papilla delivers oxygen, amino acids, and other nutrients to the hair matrix cells, fueling rapid hair growth during anagen.

Question 5: The hair growth cycle consists of three main phases. Which phase is the active growth phase?

Exogen
Catagen
Telogen
Anagen (Correct answer)

Correct answer: Anagen

The anagen phase is when the hair follicle actively produces new hair cells, typically lasting 2–7 years on the scalp.

Question 6: A clipper guard numbered #4 typically cuts hair to what length?

3/4 inch
1/2 inch (Correct answer)
1/4 inch
1/8 inch

Correct answer: 1/2 inch

Clipper guard #4 leaves hair at 1/2 inch (12 mm), with each guard number representing an additional 1/8 inch of length.

Question 7: A hairstylist uses a diffuser attachment on a blow dryer primarily to:

Add volume at the roots
Speed up drying time on thick hair
Smooth frizz on straight hair
Dry curly hair while preserving curl definition (Correct answer)

Correct answer: Dry curly hair while preserving curl definition

A diffuser disperses airflow gently to dry curly or wavy hair without disrupting the natural curl pattern.

Question 8: What is 'oxidation' in the context of permanent hair color?

The fading of artificial pigment caused by UV exposure
The chemical reaction between hydrogen peroxide and color precursors that develops color molecules (Correct answer)
The swelling of the hair shaft after shampooing
The re-bonding of disulfide bonds after a perm

Correct answer: The chemical reaction between hydrogen peroxide and color precursors that develops color molecules

Oxidation occurs when hydrogen peroxide reacts with color precursors (p-phenylenediamine) inside the cortex, coupling them into large, permanent color molecules.

Question 9: What role do standard operating procedures play in CHS Advanced Styling Techniques?

Satisfying management only
Ensuring consistency and quality through documented instructions (Correct answer)
Restricting creativity
Creating unnecessary paperwork

Correct answer: Ensuring consistency and quality through documented instructions

SOPs provide standardized instructions ensuring consistent quality regardless of which qualified person performs the work.

Question 10: What role do standard operating procedures play in CHS Sanitation & Infection Control?

Restricting creativity
Creating unnecessary paperwork
Ensuring consistency and quality through documented instructions (Correct answer)
Satisfying management only

Correct answer: Ensuring consistency and quality through documented instructions

SOPs provide standardized instructions ensuring consistent quality regardless of which qualified person performs the work.

Question 11: Which tool is used to create clean, precise partings and assist in sectioning during color application?

Vent brush
Pintail comb (Correct answer)
Detangling comb
Paddle brush

Correct answer: Pintail comb

A pintail (rat-tail) comb has a fine metal or plastic point specifically designed for creating neat sections and partings.

Question 12: What is the primary purpose of a clarifying shampoo?

Enhance curl definition
Add moisture to dry hair
Remove product buildup and mineral deposits (Correct answer)
Protect hair from heat damage

Correct answer: Remove product buildup and mineral deposits

Clarifying shampoos contain stronger surfactants that strip accumulated styling products, hard water minerals, and oils from the hair.

Question 13: Which cutting technique involves holding the hair at 180 degrees elevation before cutting?

Blunt cut
Traveling guide
Overdirected layering (Correct answer)
Zero elevation cut

Correct answer: Overdirected layering

Overdirected layering uses 180-degree elevation to create maximum layering and remove weight from the ends.

Question 14: The correct way to store sharp shears in a salon is:

In a container of barbicide solution
Hanging on a magnetic strip near the mirror
Open on the counter for quick access
In a closed case or pouch between uses (Correct answer)

Correct answer: In a closed case or pouch between uses

Storing shears in a closed case or pouch protects the blade edge from damage and prevents accidental cuts during breaks between clients.

Question 15: Hair elasticity is tested by:

Checking how quickly the hair absorbs water
Measuring the diameter of the hair shaft
Gently stretching a wet strand and observing whether it returns to its original length (Correct answer)
Examining the hair under a microscope

Correct answer: Gently stretching a wet strand and observing whether it returns to its original length

Wet hair with good elasticity can stretch up to 50% of its length and return to normal; reduced elasticity indicates cortex damage and over-processing.

Question 16: What role do standard operating procedures play in CHS Business Management?

Ensuring consistency and quality through documented instructions (Correct answer)
Satisfying management only
Creating unnecessary paperwork
Restricting creativity

Correct answer: Ensuring consistency and quality through documented instructions

SOPs provide standardized instructions ensuring consistent quality regardless of which qualified person performs the work.

Question 17: A salon's 'cost of goods sold' (COGS) primarily refers to what?

Marketing and advertising expenses
Monthly rent and utility bills
The direct cost of products and materials used to deliver services (Correct answer)
Employee wages and benefits

Correct answer: The direct cost of products and materials used to deliver services

COGS in a salon represents the cost of hair color, chemicals, and retail products directly consumed in providing services.

Question 18: Which financial document shows a salon's revenues, expenses, and net profit over a specific time period?

Balance sheet
Cash flow statement
Income statement (profit and loss statement) (Correct answer)
Accounts receivable ledger

Correct answer: Income statement (profit and loss statement)

The income statement summarizes all revenue earned and expenses incurred during a period, revealing the net profit or loss.

Question 19: A 'C-section' parting technique in haircutting is used to:

Separate the top from the nape
Create curved, interior layers that follow the head shape (Correct answer)
Isolate the crown from the sides
Define a bang section

Correct answer: Create curved, interior layers that follow the head shape

C-section partings follow the curved contour of the head, allowing interior layers to be cut in harmony with the round head shape.

Question 20: A stylist observes a coworker reusing a single-use implement (such as a neck strip) on multiple clients. This is a violation of:

State board sanitation regulations (Correct answer)
Federal trademark law
OSHA fire safety codes
ADA requirements

Correct answer: State board sanitation regulations

Single-use implements must be discarded after each client; reuse violates state board infection control rules.

Question 21: How does dandruff affect hair health?

Stimulates hair growth
Improves scalp health
Causes dryness and irritation (Correct answer)
Has no effect on hair

Correct answer: Causes dryness and irritation

Dandruff is a common scalp condition characterized by flaking and often accompanied by itching and irritation. While it doesn't directly damage the hair shaft, the underlying inflammation and dryness on the scalp can create an unhealthy environment for hair follicles. This irritation can sometimes lead to temporary hair shedding or make existing hair feel dry and brittle due to compromised scalp health.

Question 22: What distinguishes sterilization from disinfection?

Sterilization uses chemicals; disinfection uses heat
Sterilization only works on porous surfaces
Sterilization destroys all microbial life including spores; disinfection does not (Correct answer)
Disinfection is a higher level than sterilization

Correct answer: Sterilization destroys all microbial life including spores; disinfection does not

Sterilization destroys all forms of microbial life including resistant bacterial spores, while disinfection reduces pathogens to a safe level but does not eliminate all spores.

Question 23: Which sectioning pattern is most appropriate when creating a precision bob?

Radial sections from the crown
Vertical sections throughout
Horizontal sections from nape to top (Correct answer)
Diagonal forward sections

Correct answer: Horizontal sections from nape to top

Horizontal sections ensure consistent length control and a clean, even perimeter line in a bob.

Question 24: What is a needs assessment in CHS Color Theory & Application practice?

Benefits survey
Office supply list
Property appraisal
Identifying gaps between current conditions and desired outcomes (Correct answer)

Correct answer: Identifying gaps between current conditions and desired outcomes

A needs assessment identifies gaps between current performance and desired outcomes to justify improvements.

Question 25: A 'traveling guide' in haircutting refers to:

A fixed section used throughout the cut
A guide used only at the nape
A diagonal parting pattern
A moving guide that advances through the haircut (Correct answer)

Correct answer: A moving guide that advances through the haircut

A traveling guide moves with each new section cut, allowing the stylist to blend layers progressively through the haircut.

Question 26: To safely remove tape-in extensions without damaging the natural hair, a stylist should use:

Professional extension bond remover solution designed for adhesive tape (Correct answer)
Boiling hot water applied to the bonds
Acetone-based nail polish remover
A flat iron on high heat to release the tape

Correct answer: Professional extension bond remover solution designed for adhesive tape

Professional extension bond remover solutions are formulated to break down the adhesive in tape-in extensions gently and safely without stripping the natural hair or causing breakage.

Question 27: An ionic blow dryer reduces frizz primarily by:

Producing higher heat than standard dryers
Emitting negative ions that break down water molecules faster (Correct answer)
Using infrared heat to penetrate the cortex
Creating a vacuum effect that seals the cuticle

Correct answer: Emitting negative ions that break down water molecules faster

Negative ions emitted by ionic dryers attract and break apart positively charged water molecules, speeding drying time and reducing static and frizz.

Question 28: How does professional liability insurance protect CHS practitioners?

Covering financial losses from claims of negligence or errors (Correct answer)
Covering disaster damage
Protecting against equipment theft
Paying health premiums

Correct answer: Covering financial losses from claims of negligence or errors

This insurance covers financial consequences of claims alleging negligence or mistakes in professional services.

Question 29: Which layer of the skin contains the papillary and reticular layers?

Dermis (Correct answer)
Stratum corneum
Epidermis
Hypodermis

Correct answer: Dermis

The dermis is divided into the papillary layer (upper) and reticular layer (lower), which provide skin structure and elasticity.

Question 30: Which of the following is an example of a systemic disease that could be a contraindication for certain salon services?

Dry scalp (seborrheic dermatitis) in mild form
Naturally coarse hair texture
Lupus causing scalp lesions or sensitivity (Correct answer)
Controlled dandruff with medicated shampoo use

Correct answer: Lupus causing scalp lesions or sensitivity

Lupus can cause scalp lesions and skin sensitivity, making chemical services potentially harmful and contraindicated.

Question 31: Semi-permanent hair color differs from demi-permanent color because semi-permanent:

Does not penetrate the cortex and contains no developer (Correct answer)
Deposits color into the cortex without lifting
Lasts longer than demi-permanent color
Contains a small amount of hydrogen peroxide

Correct answer: Does not penetrate the cortex and contains no developer

Semi-permanent color coats the hair shaft without penetrating the cortex and requires no developer, so it causes no lift and fades with shampooing.

Question 32: Langerhans cells found in the stratum spinosum are best described as:

Pigment-producing cells that transfer melanin to keratinocytes
Immune cells that detect and present antigens to the immune system (Correct answer)
Mechanoreceptors that sense light touch on the skin surface
Stem cells that regenerate the epidermal layer after injury

Correct answer: Immune cells that detect and present antigens to the immune system

Langerhans cells are dendritic immune cells in the epidermis that capture antigens, process them, and present them to T lymphocytes, forming a critical part of the skin's immune defense.

Question 33: What is the approximate rate of hair growth on the human scalp per month?

5 cm
1.25 cm (Correct answer)
3 cm
0.5 cm

Correct answer: 1.25 cm

Scalp hair grows approximately 1.25 cm (about half an inch) per month, or roughly 15 cm per year, though this rate varies by age, genetics, and health.

Question 34: What is the primary purpose of using different cutting techniques in hair styling?

To create specific styles, texture, and volume (Correct answer)
To reduce hair damage
To increase hair length
To control hair color

Correct answer: To create specific styles, texture, and volume

Hair cutting techniques are fundamental tools for shaping and sculpting hair into desired styles, not just for shortening it. Different techniques like layering, blunt cutting, or point cutting are used to control the hair's movement, add or remove bulk, create texture, and build volume. This allows stylists to customize haircuts to suit individual preferences and hair types.

Question 35: What is the medulla in the context of hair structure?

The outermost layer of the hair shaft
The layer of cells that produces new hair
The innermost core of the hair shaft (Correct answer)
The middle cortex layer that provides strength

Correct answer: The innermost core of the hair shaft

The medulla is the innermost layer of the hair shaft, composed of loosely packed cells, and may be absent in fine hair.

Question 36: Which strategy is most effective for reducing no-show appointment rates?

Charging higher prices to deter casual bookings
Offering walk-in services only
Sending automated appointment reminders via text or email (Correct answer)
Removing the online booking option

Correct answer: Sending automated appointment reminders via text or email

Automated reminders prompt clients to confirm or cancel in advance, significantly reducing no-shows.

Question 37: A salon owner notices a top stylist is generating 40% of total revenue. What business risk does this create?

Over-reliance on one employee makes the salon vulnerable if that stylist leaves (Correct answer)
Other stylists may reduce their service quality out of jealousy
The salon may face tax penalties for uneven revenue distribution
The stylist may expect a raise, increasing payroll costs

Correct answer: Over-reliance on one employee makes the salon vulnerable if that stylist leaves

When one employee drives a disproportionate share of revenue, the salon is at high risk of significant income loss if that person resigns or leaves.

Question 38: A cosmetologist accidentally nicks a client's ear. What is the first step?

Continue the service and monitor the client
Apply a chemical disinfectant directly to the wound
Apply hydrogen peroxide without gloves
Put on gloves, stop the bleeding, and follow exposure control procedures (Correct answer)

Correct answer: Put on gloves, stop the bleeding, and follow exposure control procedures

When an accidental nick occurs, the stylist must don gloves immediately, stop the bleeding, and follow the salon's exposure control plan for bloodborne pathogen incidents.

Question 39: What is a corrective action plan in CHS compliance?

A sales strategy
A renovation plan
An employee behavior plan
A strategy to address deficiencies and prevent recurrence (Correct answer)

Correct answer: A strategy to address deficiencies and prevent recurrence

A corrective action plan addresses compliance gaps with root cause analysis, remediation, timelines, and prevention measures.

Question 40: Which type of brush is specifically designed to smooth hair and add shine while blow-drying?

Paddle brush
Vent brush
Round brush
Boar bristle brush (Correct answer)

Correct answer: Boar bristle brush

Boar bristle brushes distribute natural scalp oils along the hair shaft, adding smoothness and shine during blow-drying.

Question 41: Which product application method best prevents product buildup when using a volumizing mousse?

Apply only to dry hair after styling
Distribute evenly through mid-lengths and ends, avoiding the scalp (Correct answer)
Apply directly to the scalp for maximum root lift
Coat each strand individually from root to tip

Correct answer: Distribute evenly through mid-lengths and ends, avoiding the scalp

Applying mousse to mid-lengths and ends while avoiding the scalp prevents oily buildup at the root while still adding body and hold.

Question 42: What is the name of the protein that makes up the majority of the hair fiber?

Collagen
Keratin (Correct answer)
Elastin
Melanin

Correct answer: Keratin

Hair is composed primarily of keratin, a fibrous structural protein also found in nails and the outer layer of skin.

Question 43: What is the technical term for the visible part of the hair above the skin surface?

Hair shaft (Correct answer)
Hair root
Hair bulb
Hair follicle

Correct answer: Hair shaft

The hair shaft is the portion of the hair that extends above the skin surface and is composed of the cuticle, cortex, and sometimes the medulla.

Question 44: In the chain of infection, what term describes the person who carries a pathogen without showing symptoms?

Vector
Reservoir host
Susceptible host
Asymptomatic carrier (Correct answer)

Correct answer: Asymptomatic carrier

An asymptomatic carrier harbors and can transmit pathogens without displaying any signs or symptoms of the disease themselves.

Question 45: Point cutting is best used to:

Add texture and remove weight from ends (Correct answer)
Build bulk at the crown
Create a perfectly blunt line
Taper the nape area

Correct answer: Add texture and remove weight from ends

Point cutting uses the scissor tips to cut into the ends at an angle, breaking up blunt lines and adding natural texture.

Question 46: Which cells in the epidermis produce the pigment that protects against UV radiation?

Melanocytes (Correct answer)
Merkel cells
Keratinocytes
Langerhans cells

Correct answer: Melanocytes

Melanocytes in the basal layer of the epidermis synthesize melanin and transfer it to surrounding keratinocytes to protect DNA from UV damage.

Question 47: Leave-in conditioners differ from rinse-out conditioners primarily because they:

Are applied to dry hair only
Are not rinsed out and continue to moisturize throughout the day (Correct answer)
Contain stronger proteins
Have a lower pH to close the cuticle

Correct answer: Are not rinsed out and continue to moisturize throughout the day

Leave-in conditioners are formulated at a lower concentration to remain on the hair shaft all day, providing ongoing moisture and detangling benefits.

Question 48: A salon owner wants to expand by opening a second location. Which financial consideration is most critical before proceeding?

Whether the owner has enough personal savings to redecorate both locations
Whether the existing salon generates consistent enough profit to fund or support the new location (Correct answer)
Whether the current stylists are willing to relocate to the new site
Whether the current salon's décor style can be replicated exactly

Correct answer: Whether the existing salon generates consistent enough profit to fund or support the new location

Expansion should only be pursued when the primary location demonstrates stable profitability, ensuring the business can absorb startup costs and operational risks of a second site.

Question 49: What is the purpose of blow-drying in hair styling?

To create volume and shape (Correct answer)
To prevent hair from frizzing
To increase hair length
To dry the hair only

Correct answer: To create volume and shape

While blow-drying does dry the hair, its primary styling purpose is to manipulate the hair's shape, volume, and texture using heat and airflow. Stylists use brushes and specific techniques during blow-drying to lift the roots, smooth the cuticle, create waves or curls, and set the hair into a desired style. It's a foundational step for many finished looks.

Question 50: Which color theory principle explains why a violet-based toner is applied to cancel out yellow brassy tones?

Warm colors advance, cool colors recede
Color at the same level deposits faster
Analogous color harmony
Complementary colors neutralize each other (Correct answer)

Correct answer: Complementary colors neutralize each other

Violet (purple) sits opposite yellow on the color wheel, so applying violet-based product neutralizes unwanted yellow tones.

Certified Hair Stylist (CHS)

The CHS certification exam, administered by AIBM, validates professional competency across six core domains of hair styling including cutting techniques, chemical services, trichology, salon management, and advanced styling. It is designed for working professionals seeking an industry-recognized credential in hair styling.

Questions

90 min

Time Limit

70%

To Pass

Checking for saved progress...

Exam Rules

You can skip questions and return to them later
Flag questions for review before submitting
No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds