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NY Cosmetology study materials
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NY Cosmetology practice questions

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Question 1Hair Care and Treatment (shampooing, conditioning, scalp care)

What is the primary purpose of shampooing a client's hair?

  1. To deposit color pigment deep into the cortex
  2. To seal split ends so they no longer show
  3. To cleanse hair and scalp of oil and dirt Correct answer.
  4. To permanently straighten the hair cuticle

Explanation

Shampoo's purpose is cleansing: surfactants lift sebum, perspiration, dirt, and styling residue so they can be rinsed away. Chemical and color services are separate procedures with their own products.

Question 2Hair Care and Treatment (shampooing, conditioning, scalp care)

A surfactant molecule is able to remove oil from hair because it has which combination of ends?

  1. An oil-loving head and an oil-loving tail
  2. A positively charged head and a metal tail
  3. A water-loving head and an oil-loving tail Correct answer.
  4. A water-loving head and a water-loving tail

Explanation

A surfactant has a hydrophilic (water-attracting) head and a lipophilic (oil-attracting) tail. The tail binds to sebum and dirt while the head stays with water, allowing the soil to be rinsed away.

Question 3Hair Care and Treatment (shampooing, conditioning, scalp care)

Which water temperature is recommended when shampooing a client's hair?

  1. Cold water, to slow oil production
  2. Warm water, comfortable to the client Correct answer.
  3. Alternating hot and cold every 30 seconds
  4. Hot water, to open the cuticle

Explanation

Warm water melts sebum and supports lathering while remaining comfortable on the scalp. Very hot water can irritate and dry the scalp, and cold water does not cleanse efficiently.

Question 4Hair Care and Treatment (shampooing, conditioning, scalp care)

An acid-balanced shampoo falls into which pH range?

  1. 9.0 to 10.5
  2. 7.0 to 8.5
  3. 4.5 to 5.5 Correct answer.
  4. 1.0 to 2.0

Explanation

Acid-balanced shampoos are formulated near the natural pH of hair and scalp, about 4.5 to 5.5. At that pH the cuticle stays compact and hair feels smooth.

Question 5Hair Care and Treatment (shampooing, conditioning, scalp care)

Which shampoo is formulated to remove product buildup and mineral deposits from hair?

  1. Clarifying shampoo Correct answer.
  2. Color-enhancing shampoo
  3. Balancing shampoo
  4. Moisturizing shampoo

Explanation

Clarifying shampoos use stronger cleansing agents and typically contain few or no conditioning additives, so they strip residue that ordinary shampoo leaves behind. They are used occasionally, not daily.

Question 6Hair Care and Treatment (shampooing, conditioning, scalp care)

What is the main function of a rinse-out conditioner?

  1. To raise the hair's pH well above neutral
  2. To lighten the natural pigment in the cortex
  3. To smooth the cuticle and cut down friction Correct answer.
  4. To lift sebum and debris away from the scalp

Explanation

Conditioners deposit smoothing agents on the surface that flatten cuticle scales, reduce friction between strands, and make combing easier. Cleansing is the shampoo's job.

Question 7Hair Care and Treatment (shampooing, conditioning, scalp care)

Which scalp massage movement is a light, gliding stroke made with the palms or fingers?

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

Explanation

Effleurage is the gliding, stroking movement used to begin and end a massage and to spread product. It is the gentlest of the standard manipulations.

Question 8Hair Care and Treatment (shampooing, conditioning, scalp care)

Scalp massage should be avoided when the client has which condition?

  1. A cut on the scalp Correct answer.
  2. A dry scalp with light flaking
  3. Hair that is fine and limp
  4. A scalp that produces excess oil

Explanation

An open cut or abrasion is a contraindication because massage can spread irritation, introduce contamination, and cause discomfort. Fine hair, oiliness, and mild flaking are not contraindications.

Question 9Hair Care and Treatment (shampooing, conditioning, scalp care)

Which surfactant type supplies most of the cleansing action in a typical shampoo?

  1. Cationic
  2. Amphoteric
  3. Anionic Correct answer.
  4. Nonionic

Explanation

Anionic surfactants carry a negative charge, produce rich lather, and are the strongest and most common cleansing agents in shampoo. The other types are used for mildness, thickening, or conditioning.

Question 10Hair Care and Treatment (shampooing, conditioning, scalp care)

Why do the conditioning agents in a cream rinse cling to the hair?

  1. They contain acids that soften and dissolve the cuticle
  2. They carry a positive charge attracted to negative hair Correct answer.
  3. They carry a negative charge that pushes them away from the hair
  4. They are nonpolar molecules that bond only with water

Explanation

Hair in water carries a slight negative charge, and cationic conditioning agents are positively charged, so they are attracted to the surface and stay behind after rinsing. This is why conditioners are built on cationic surfactants.

Question 11Hair Care and Treatment (shampooing, conditioning, scalp care)

Which ingredient is added to a conditioner specifically to attract and hold moisture in the hair?

  1. Glycerin Correct answer.
  2. Ammonium hydroxide
  3. Isopropyl alcohol
  4. Sodium lauryl sulfate

Explanation

Glycerin is a humectant, meaning it draws moisture from the air and holds it in the hair. Humectants are key components of moisturizing conditioners.

Question 12Hair Care and Treatment (shampooing, conditioning, scalp care)

A client's hair is over-processed and snaps easily when wet. Which treatment is most appropriate?

  1. A scalp astringent
  2. A hot oil treatment applied to the scalp only
  3. A protein conditioner along the hair shaft Correct answer.
  4. A clarifying shampoo only

Explanation

Over-processed hair has gaps in its structure; a protein conditioner temporarily fills those gaps and improves strength and elasticity. It is usually followed by a moisturizing conditioner to restore softness.

Question 13Hair Care and Treatment (shampooing, conditioning, scalp care)

The sebaceous glands attached to hair follicles secrete which substance?

  1. Keratin
  2. Sweat
  3. Sebum Correct answer.
  4. Melanin

Explanation

Sebaceous glands produce sebum, the natural oil that lubricates the hair and scalp. Its amount determines whether the scalp is classified as oily, normal, or dry.

Question 14Hair Care and Treatment (shampooing, conditioning, scalp care)

Hair that absorbs water quickly and feels rough when wet is best described as having:

  1. No porosity
  2. High porosity Correct answer.
  3. Normal porosity
  4. Low porosity

Explanation

High porosity means the cuticle is raised or damaged, so water enters and leaves quickly and the strand feels rough. This hair needs gentle handling and conditioning support.

Question 15Hair Care and Treatment (shampooing, conditioning, scalp care)

During a hair analysis, a wet strand stretches and returns to its original length. What does this indicate?

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

Explanation

Healthy, normal-elasticity hair stretches about half its length when wet and springs back. If it does not return, the hair is weak and chemical services should be avoided.

Question 16Hair Care and Treatment (shampooing, conditioning, scalp care)

Which set of signs best matches ordinary dandruff (pityriasis)?

  1. Round, bald patches with broken hairs and scaling
  2. Small white eggs glued firmly to the hair shafts
  3. Fine white flakes with no redness or broken skin Correct answer.
  4. An itchy, inflamed scalp covered with pus-filled bumps

Explanation

Simple dandruff appears as flaking of the scalp without inflammation, open lesions, or hair loss, and it can be managed with medicated shampoo. Redness, pus, bald patches, or eggs require referral.

Question 17Hair Care and Treatment (shampooing, conditioning, scalp care)

Therapeutic or medicated shampoos are formulated to do which of the following?

  1. Permanently straighten the hair
  2. Control scalp conditions such as dandruff Correct answer.
  3. Increase the density of the hair
  4. Add semipermanent color pigment to the hair

Explanation

Medicated shampoos contain active ingredients such as antifungal or keratolytic agents to control flaking and seborrheic conditions. They are treatment products, not cosmetic or restructuring ones.

Question 18Hair Care and Treatment (shampooing, conditioning, scalp care)

What problem does hard water create during shampooing?

  1. It permanently lightens the hair
  2. Minerals leave a dull film on the hair Correct answer.
  3. It makes the lather richer and easier to rinse
  4. It seals the cuticle and blocks cleansing

Explanation

Hard water contains dissolved minerals such as calcium that combine with cleansers and leave a dulling film on the hair. Clarifying or chelating products help remove this residue.

Question 19Hair Care and Treatment (shampooing, conditioning, scalp care)

When conditioning hair that becomes oily quickly at the scalp, where should the conditioner be applied?

  1. Evenly over the scalp and hair
  2. Directly to the scalp roots
  3. From mid-shaft to ends Correct answer.
  4. Only to the very ends and left on for an hour

Explanation

Oily scalps already have natural lubrication at the roots, so conditioner is applied from the mid-shaft through the ends, where hair is older and drier. This avoids weighing down the scalp area.

Question 20Hair Care and Treatment (shampooing, conditioning, scalp care)

Before shampooing, the cosmetologist analyzes the client's hair and scalp mainly to determine:

  1. The condition of the scalp and hair Correct answer.
  2. The price of the service
  3. The client's birth date
  4. Only the client's natural hair color level

Explanation

Analysis identifies scalp type, hair texture, porosity, elasticity, and any conditions present, which together guide product selection and reveal contraindications. It is a professional responsibility performed before the service.

Question 21Hair Care and Treatment (shampooing, conditioning, scalp care)

Why does repeated use of a strongly alkaline shampoo leave hair feeling rough?

  1. It shrinks the hair shaft and flattens the cuticle
  2. It coats the hair with a silicone film
  3. It swells the shaft and lifts the cuticle Correct answer.
  4. It removes melanin from the cortex

Explanation

Alkaline products cause the hair shaft to swell, which raises the cuticle scales and creates a rough surface that tangles and loses shine. Acid-balanced products keep the cuticle flat.

Question 22Hair Care and Treatment (shampooing, conditioning, scalp care)

Which surfactant type is most likely to be selected for a mild baby shampoo?

  1. Soap-based
  2. Cationic
  3. Amphoteric Correct answer.
  4. Anionic

Explanation

Amphoteric surfactants are mild, low-irritating cleansers that can be balanced with other surfactants, making them suitable for products intended for sensitive scalps. Anionic surfactants are stronger cleansers.

Question 23Hair Care and Treatment (shampooing, conditioning, scalp care)

A client has an itchy scalp with tiny eggs firmly attached to the hair shafts. What is the correct action?

  1. Apply a hot oil treatment and shampoo
  2. Massage vigorously to loosen the eggs
  3. Use a medicated dandruff shampoo daily
  4. Refer the client to a physician Correct answer.

Explanation

Eggs glued to the hair shaft indicate a contagious infestation, which is outside the cosmetologist's scope and must be treated medically. The service should be declined politely and the client referred.

Question 24Hair Care and Treatment (shampooing, conditioning, scalp care)

Repeated use of a conditioner loaded with non-water-soluble silicones can produce which result?

  1. Permanent straightening of curly hair
  2. Faster fading of hair color
  3. A dull film that weighs hair down Correct answer.
  4. Increased scalp sebum production

Explanation

Non-water-soluble silicones resist rinsing and layer on the hair over time, creating buildup that makes hair feel limp and look dull. Periodic clarifying removes the film.

Question 25Hair Care and Treatment (shampooing, conditioning, scalp care)

A client with fine hair and an oily scalp wants more body. Which routine best fits the analysis?

  1. A heavy moisturizing shampoo plus a deep conditioner at the roots
  2. Balancing shampoo plus light conditioner on the ends Correct answer.
  3. Conditioner-only washing with a rich cream rinse
  4. A hot oil treatment before every shampoo

Explanation

Fine, oily hair benefits from a shampoo designed for oil control and from conditioner applied only where it is needed, at the ends, so the scalp area stays light. Heavy products would weigh the hair down further.

Question 26Hair Cutting and Shaping

At what elevation is the hair held to create a one-length (blunt) haircut?

  1. 0 degrees Correct answer.
  2. 180 degrees
  3. 45 degrees
  4. 90 degrees

Explanation

At 0 degrees of elevation the hair is held flat against the head and falls to the same level as the perimeter guide, so every strand ends on one line. Higher elevations lift the hair away from the head and build graduation or layering.

Question 27Hair Cutting and Shaping

Which cutting technique softens the ends of a line by snipping into them with the tips of the shears held nearly parallel to the strand?

  1. Clipper-over-comb
  2. Blunt cutting
  3. Cross-checking
  4. Point cutting Correct answer.

Explanation

Point cutting removes small notches at the ends with the shear tips angled into the strand, which softens the line and lightens the appearance of the ends. Blunt cutting, by contrast, slices squarely across the strand and leaves a solid edge.

Question 28Hair Cutting and Shaping

Which tool removes bulk and reduces weight without noticeably shortening the overall length?

  1. Outlining clippers
  2. Straight shears
  3. A straight razor
  4. Texturizing shears Correct answer.

Explanation

Texturizing (thinning) shears have teeth on one blade, so only part of the hair in a subsection is cut and weight is reduced while the length stays intact. Tools with solid cutting edges shorten every strand they contact.

Question 29Hair Cutting and Shaping

A small section of hair at the front hairline that grows in a different direction from the surrounding hair and tends to stand up is called a:

  1. widow's peak
  2. cowlick Correct answer.
  3. parting
  4. whorl

Explanation

A cowlick is a growth pattern in which a small section of hair grows away from the rest and stands up, most often at the front hairline. Cutting it very short makes the direction more obvious.

Question 30Hair Cutting and Shaping

Which pair of partings divides the head into the four basic cutting sections?

  1. A side part to the nape and ear to ear over the occipital bone
  2. Center front hairline to nape and ear to ear across the crown Correct answer.
  3. Center front hairline to nape and temple to temple in front
  4. Ear to ear across the crown and nape to crown

Explanation

The four-section method uses a center parting from the front hairline to the nape plus a parting from ear to ear across the top of the crown. Together they create front-left, front-right, back-left and back-right sections.

Question 31Hair Cutting and Shaping

Why must tension be kept consistent from section to section while cutting?

  1. It keeps the shears sharp for longer
  2. It prevents the hair from drying out during the cut
  3. It allows the stylist to cut larger subsections
  4. It keeps the finished line even on both sides Correct answer.

Explanation

Hair held under more tension is stretched and springs back shorter once released, so uneven tension produces an uneven line and mismatched sides. Consistent tension means every subsection is measured under the same conditions.

Question 32Hair Cutting and Shaping

Cross-checking a haircut means:

  1. measuring both sides with a ruler
  2. cutting the hair a second time with clippers
  3. comparing the finished cut with a photograph
  4. checking the shape from the opposite direction Correct answer.

Explanation

Cross-checking takes sections perpendicular to the original cutting lines so the stylist can see whether the shape is genuinely balanced instead of just following the path already cut. It exposes longer or shorter areas hidden when hair is combed in the original direction.

Question 33Hair Cutting and Shaping

Clipper-over-comb is the technique of choice for:

  1. creating a soft, textured fringe
  2. tapering hair close to the scalp at the nape and sides Correct answer.
  3. removing weight from thick, straight hair in the interior
  4. blending long layers at the crown

Explanation

In clipper-over-comb the comb acts as both guide and shield while the clippers cut the hair protruding through the teeth, which suits short tapers and fades close to the scalp. It is not used to establish length on longer areas of the cut.

Question 34Hair Cutting and Shaping

Holding the hair at 90 degrees elevation from the curve of the head and cutting to a stationary guide produces which form?

  1. A solid one-length form
  2. An increased-length layered form
  3. A graduated form
  4. A uniformly layered form Correct answer.

Explanation

At 90 degrees all the hair is projected straight out from the head, so every layer ends at the same length and the form is uniformly layered. Solid, graduated and increased-length forms are cut at 0, 45 and 180 degrees respectively.

Question 35Hair Cutting and Shaping

Cutting at 45 degrees elevation with a stationary guide produces which result?

  1. All layers cut to an equal length
  2. A one-length line with no layers
  3. Weight stacked toward the perimeter Correct answer.
  4. Weight removed from the interior of the shape

Explanation

At 45 degrees each subsection is cut longer than the one below it, so the lengths stack and weight accumulates toward the perimeter. That build-up of weight is the defining feature of a graduated form.

Question 36Hair Cutting and Shaping

Which elevation produces an increase in length toward the crown, as in a long-layered cut?

  1. 0 degrees
  2. 45 degrees
  3. 180 degrees Correct answer.
  4. 90 degrees

Explanation

At 180 degrees the hair is lifted straight above the head, so higher subsections fall longer than lower ones and length increases toward the crown. This is the elevation used for long-layered and increased-length forms.

Question 37Hair Cutting and Shaping

How does a traveling guide differ from a stationary guide?

  1. It is set once and never changes
  2. It is used only with clippers
  3. It moves forward with each new subsection Correct answer.
  4. It is taken from the opposite side of the head

Explanation

With a traveling guide the previously cut subsection becomes the guide for the next one, so the reference line travels through the hair and can follow the curve of the head. A stationary guide stays fixed while every other subsection is brought to it.

Question 38Hair Cutting and Shaping

Overdirection is used to:

  1. reduce the amount of tension on fine hair
  2. shorten the perimeter line evenly all around
  3. remove bulk from the interior of the hair
  4. keep length or build weight in one area Correct answer.

Explanation

Overdirection means combing a subsection away from its natural fall before cutting, so it is measured against a longer or heavier part of the shape. Stylists use it to preserve length in front, build weight in a corner, or shift weight where the design requires it.

Question 39Hair Cutting and Shaping

Compared with shear cutting, razor cutting leaves the ends:

  1. blunter and heavier
  2. shorter and more uniform
  3. softer and more tapered Correct answer.
  4. cleaner and more solid

Explanation

A razor slices through the strand at a slant rather than meeting it squarely, so the ends taper and the finished edge looks softer. Shears produce a solid line because both blades close directly across the hair.

Question 40Hair Cutting and Shaping

Slide cutting is performed by:

  1. sliding partially opened shears down the strand Correct answer.
  2. cutting against a comb with the clippers
  3. twisting the section and cutting into the twist
  4. cutting straight across a subsection with the shears closed

Explanation

In slide cutting the shears are opened slightly and drawn along the strand so the blades remove length and soften the ends in a single motion. It is used to blend layers and create movement without leaving a hard line.

Question 41Hair Cutting and Shaping

When taking a subsection for cutting, its width should be no greater than:

  1. the length of the cutting blade Correct answer.
  2. one inch regardless of the tool
  3. the width of the comb
  4. the client's hair density divided by four

Explanation

A subsection wider than the blade cannot be cut cleanly in one pass, so the stylist loses control of the guide. Keeping the subsection within the blade length ensures all the hair in it is cut at the intended angle.

Question 42Hair Cutting and Shaping

Which cutting line builds weight and creates a heavier perimeter in a haircut?

  1. A curved line
  2. A horizontal line Correct answer.
  3. A vertical line
  4. A diagonal line

Explanation

Horizontal cutting lines stack hair at the same level, which concentrates weight along the perimeter. Vertical lines remove weight and allow the hair to move more freely.

Question 43Hair Cutting and Shaping

Interior layering is used primarily to:

  1. reduce interior weight while keeping the outline Correct answer.
  2. raise the elevation of the perimeter subsections
  3. shorten the outer perimeter for a rounder shape
  4. create a graduated effect along the nape

Explanation

Interior layers are cut inside the outer boundary of the shape, so weight is removed where the hair is densest while the visible perimeter stays unchanged. This suits thick hair that needs movement without losing its outline.

Question 44Hair Cutting and Shaping

Why should wet hair be cut conservatively when a precise finished length is required?

  1. Wet hair is more difficult to section
  2. Wet hair is weaker and can tear easily
  3. Wet hair stretches and shrinks as it dries Correct answer.
  4. Wet hair reflects less light than dry hair

Explanation

Water stretches the hair, so a wet strand measures longer than the same strand when dry and the finished result appears shorter than the wet measurement. Cutting conservatively leaves room for that shrinkage.

Question 45Hair Cutting and Shaping

When establishing a blunt perimeter line, the client's head should be:

  1. turned to one side for each section
  2. tilted forward to expose the nape
  3. tilted back so the hair falls away from the face
  4. held upright in its natural position Correct answer.

Explanation

A perimeter cut while the head is tilted will shift once the client straightens up, leaving an uneven line. Cutting with the head in its natural upright position keeps the line where it will actually fall.

Question 46Hair Cutting and Shaping

A client has a strong cowlick at the front hairline. Which approach best keeps the finished fringe from standing up?

  1. Apply strong tension so the cowlick is stretched flat while cutting
  2. Leave extra length and blend it into nearby hair Correct answer.
  3. Cut the cowlick directly against its natural growth direction
  4. Cut the cowlick area shorter so its weight holds it down

Explanation

Hair at a cowlick grows away from the rest of the hairline, so cutting it short removes the weight that would otherwise hold it down. Leaving extra length and blending it into the neighbouring hair lets weight control the direction.

Question 47Hair Cutting and Shaping

A stylist cuts very curly hair wet to a blunt chin-length line. Once the hair dries, the most likely outcome is:

  1. the hair will appear longer than planned
  2. the line will look straighter than planned
  3. the ends will look heavier than planned
  4. the hair will appear shorter than planned Correct answer.

Explanation

Curly hair shrinks considerably as it dries, so wet length is not a reliable measure of finished length. Cutting it wet to a set line therefore produces a result that dries shorter than intended.

Question 48Hair Cutting and Shaping

A client wants a graduated bob that is shortest at the nape and builds weight toward the jaw. Which cutting plan produces this shape?

  1. Diagonal subsections cut at 180 degrees from a traveling guide
  2. Horizontal subsections cut at 0 degrees from a stationary guide
  3. Vertical subsections cut at 90 degrees from a traveling guide
  4. Horizontal subsections at 45 degrees from a stationary guide Correct answer.

Explanation

Graduation is created by cutting horizontal subsections at 45 degrees to a stationary guide, starting at the nape so each higher subsection is cut longer than the one below. Stacking the lengths builds the weight line toward the jaw.

Question 49Hair Cutting and Shaping

A blunt one-length cut looks even when combed down but cross-checks longer on the left side. The most likely cause is:

  1. less tension was used on the left subsections Correct answer.
  2. the shears were held at a beveled angle on the left
  3. the left subsections were cut too thin near the perimeter
  4. the left side was cut before the nape

Explanation

Hair held under tension is stretched while it is cut and springs back shorter once released, so slack tension leaves the hair longer than a tightly held guide. A left side that cross-checks longer was therefore cut with less tension than the right.

Question 50Hair Cutting and Shaping

A stylist holds the subsection between the fingers with the fingertips angled away from the head instead of parallel to the subsection. What is the effect on the cut?

  1. The ends are cut squarely for a heavier line
  2. The ends are beveled toward the outer strand Correct answer.
  3. The hair is cut shorter than the guide requires
  4. The subsection is cut thicker than the rest of the shape

Explanation

Angling the fingers away from the head means the blade meets the strand at a slant, so hair near the head is cut shorter than hair at the outer edge and the ends become beveled. Fingers held parallel cut the subsection evenly across its width.