Free cosmetology practice test: 25 NIC-style questions

Answer: C. Brittle hair that splits and breaks easily

FRAGILITAS CRINIUM = brittle hair (splits/breaks along the shaft from over-processing/heat abuse) — conditioning and cutting damage out; the vocabulary twin of trichoptilosis on exams.

• A. Rapid hair growth: Growth speed has no disorder name at the fast end — fragilitas describes structural failure, not vigor.
• B. Head lice infestation: Lice are pediculosis — fragilitas is condition vocabulary, no parasites involved.
• D. A luxury conditioning treatment: It's the DIAGNOSIS conditioning treats — the problem, not the product.

Answer: A. Use machine-sewn wefts — ventilated and affordable versus hand-tied's natural movement

CAPLESS/WEFTED = machine-sewn hair rows on elastic strips → ventilated, lighter, affordable · HAND-TIED = individual knots on mesh → most natural movement/parting, premium price.

• B. Cannot be worn daily: Ventilated wefting is the daily-wear workhorse — comfort is its selling point.
• C. Have no attachment structure at all: 'Capless' still has strip architecture — the name contrasts with full solid caps, not with structure itself.
• D. Are always human hair: Construction and fiber are independent axes — wefted synthetics dominate the affordable shelf.

Answer: D. Postpone chemicals and rebuild with protein treatments first

Overstretch + no recovery = severely compromised elasticity → POSTPONE chemical services, rebuild with protein, retest. Normal wet stretch ≈ 50% WITH return.

• A. Proceed — stretchier hair takes perms better: That stretch is the cortex FAILING, not flexibility — chemicals on it finish the breakage the test predicted.
• B. Cut all the hair off immediately: Rebuilding is usually possible — the scissors decision comes after treatment attempts, not before.
• C. Use double processing to strengthen it: No chemical service strengthens hair — every process spends bonds; weak hair has none to spare.

Answer: B. It buffers dry, fragile coils against stripping and eases detangling

PRE-POO (oil/conditioner before shampoo) BUFFERS fragile, dry coils from surfactant stripping + eases detangling — coily hair's sebum travels poorly down bends, so the wash needs a cushion.

• A. It replaces shampoo entirely: The PRE in pre-poo promises a wash after — buffering, not substituting.
• C. Coily hair needs harsher washing: Backwards — the texture's dryness calls for GENTLER cleansing; the pre-poo doubles the gentleness.
• D. It's only marketing: The sebum-travel problem is real fiber science — bends block oil's journey; the cushion compensates.

Answer: B. Cleaned and fully disinfected before any further use

Blood-contacted tools: stop, glove, then clean + FULL EPA disinfection (or dispose single-use) before ANY reuse. The service resumes with clean implements.

• A. Thrown away even if metal: Metal implements disinfect and live on — disposal is for SINGLE-USE items; shears survive with proper processing.
• C. Wiped on a towel and reused immediately: A towel wipe moves blood around — bloodborne pathogens need the full clean + EPA contact-time cycle.
• D. Rinsed in hot water only: Hot tap water neither cleans debris fully nor meets any kill claim — it's step zero, not the procedure.

Answer: A. Traction alopecia — pull-induced hair loss starting at the hairline

Excess tension → TRACTION ALOPECIA: follicle damage from constant pull, starting at hairline/partings — early signs: pain, bumps, sterile pustules. Preventable; advanced cases permanent.

• B. Nothing, if the client tolerates the pain: Tolerated pain is still tissue damage accruing — professional standard is tension the scalp never protests.
• C. Color fading only: Pigment is untouched by tension — the casualty is the follicle's anchor, a structural injury.
• D. Faster, healthier growth from stimulation: The 'tight = growing' myth destroys edges — constant pull damages follicles; it never trains them.

Answer: B. A dye remover or controlled lightening designed for artificial pigment

Artificial pigment removal = dye REMOVERS/solvents (sulfur-based reducers shrink dye molecules) or careful lightener washes — lightener alone treats natural pigment differently than artificial.

• A. Sunlight exposure for a week: UV fades color unevenly and damages while it fades — a controlled remover does in an hour what sun does badly in months.
• C. Applying a lighter tint over it: 'Tint doesn't lift tint' is the oldest rule in color — a lighter shade over dark deposit changes nothing.
• D. Hot oil treatments nightly: Oils condition; oxidative dye molecules are locked in the cortex — chemistry put them there, chemistry must shrink them.

Answer: C. Consistent ~45° elevation with lengths increasing toward the front

STACKING = consistent LOW-TO-MID elevation (~45°) through the back with a traveling guide, lengths increasing toward the front — the wedge silhouette rising from nape to the longer face-frame.

• A. Zero elevation throughout: Zero builds the one-length bob — the stack NEEDS lift to layer weight on weight.
• B. Random elevations per section: The wedge reads as design only when the angle holds — wandering elevation reads as accident.
• D. Clippers at the crown first: Stacks build from the NAPE up with shears (or shear-over-comb low) — crown-first inverts the architecture.

Answer: A. Braided cornrow tracks on the scalp

Sew-ins stitch wefts to CORNROW TRACKS with curved needle + thread. Track tension and cleanliness decide comfort and hair health.

• B. A full wig cap only: Weft-to-cap construction makes a WIG — a sew-in integrates with the client's own braided hair.
• C. The scalp skin directly: Nothing is ever stitched to SKIN — the cornrow is the buffer that makes sewing safe.
• D. Loose natural strands with glue: Glue on loose strands is BONDING — a different (and higher-breakage) method; sewing needs a braided anchor.

Answer: C. Cooling the shaped hair so hydrogen bonds lock the new form

Heat SOFTENS hydrogen bonds into a new shape; COOL air SETS them there — the cool blast locks volume/bend while the hair still holds the brush's form. Same physics as letting curls cool in the iron's shape.

• A. Cleaning the dryer's filter: Maintenance is a separate chore — the button changes AIR temperature for the hair's benefit, not the machine's.
• B. Nothing — it's a comfort feature: The set-while-cooling physics is real and testable — brush-cooled sections hold visibly longer.
• D. Re-wetting the hair slightly: The air is dry either way — cooling changes bond behavior, not moisture content.

Answer: A. On damp, conditioned hair from ends up in sections

Detangle DAMP with conditioner/slip, wide-tooth comb or fingers, ENDS UPWARD in sections — dry ripping snaps twist points.

• B. Only with maximum-heat blow-drying first: Heat-stretching tangles adds thermal stress to mechanical stress — slip does the job heat can't.
• C. Never — coils shouldn't be detangled: Un-detangled sheds mat into locs unintentionally — gentle regular detangling is retention care.
• D. Dry with a fine-tooth comb from roots down: Root-down through dry coils drags every knot into the next — the breakage soundtrack every texture client knows.

Answer: C. 5 (4.5–5.5)

Hair and skin average pH ≈ 5 (4.5–5.5), maintained by the protective acid mantle.

• A. 7 — neutral: Hair and skin are NOT neutral — the acid mantle keeps them near 5, which is why alkaline products feel harsh and open the cuticle.
• B. 2 — strongly acidic: 2 would burn — that's chemical-peel strength. The acid mantle is a mild ~5.
• D. 9 — mildly alkaline: At 9 you're in relaxer/color territory. Healthy hair/skin sit acidic, around 5.

Answer: B. Fuse

Fuse = melts once, replace it · circuit breaker = switch that trips and RESETS · GFCI = cuts power on ground-fault (wet areas).

• A. Circuit breaker: A breaker TRIPS and flips back on — reusable. The one-time melt-and-replace device is the fuse.
• C. Rectifier: A rectifier CONVERTS AC to DC — a current-changing component, not a safety cutoff.
• D. Converter: A converter changes DC to AC — again conversion, not overload protection.

Answer: C. Cortex

Cuticle = protective scales · CORTEX = bulk, strength, elasticity, melanin · medulla = hollow core, often absent in fine hair.

• A. Cuticle: The cuticle is a thin shield of overlapping scales — vital for shine and protection but a small share of mass.
• B. Medulla: The medulla is the often-MISSING hollow core — it contributes so little that fine hair does without it.
• D. Follicle: The follicle is the skin STRUCTURE the hair grows from — not a layer of the shaft itself.

Answer: C. Humerus

HUMERUS (upper arm) → ulna (pinky-side forearm) + radius (thumb-side forearm) → carpals. Massage of the arm follows the bone map.

• A. Clavicle: The clavicle (collarbone) braces the shoulder — the arm's long bone hangs from it.
• B. Femur: The femur is the THIGH'S heavyweight — same role, lower limb.
• D. Radius: The radius is the FOREARM'S thumb-side bone — below the elbow, not above.

Answer: D. Collagen, elastin, vessels, nerves, glands, and follicles

DERMIS = the living support layer: COLLAGEN + ELASTIN, blood vessels, nerves, glands, follicles — everything structural; the epidermis above is avascular (fed by dermal diffusion).

• A. Only dead keratinized cells: Dead keratin is the EPIDERMIS's corneum — the dermis is the most alive layer skin has.
• B. Its own direct sunlight supply: Nothing biological pipes sunlight — the dermis runs on BLOOD, which the epidermis borrows by diffusion.
• C. Nothing — it's empty padding: Padding is the SUBCUTANEOUS fat below — the dermis is dense working tissue, skin's engine room.

Answer: B. Discarded — it cannot be disinfected

Porous (absorbent) items cannot be disinfected and must be discarded after one use.

• A. Washed with soap and reused: Washing is sanitation — the lowest level. Even proper disinfection is impossible on porous items, let alone soap and water.
• C. Immersed in disinfectant for 10 minutes: Immersion is for NONporous items. Porous materials absorb — disinfectant can't reach what's soaked inside, so they can never be disinfected.
• D. Sprayed and stored in a clean drawer: Spraying a porous surface treats only the outside; the pores keep contamination. Single-use means single client, then the trash.

Answer: D. Soften, swell, and open

Alkaline products soften and swell the cuticle open; acidic products harden and close it.

• A. Change color: pH itself doesn't recolor hair — color change needs dyes/lighteners; alkalinity just opens the door for them.
• B. Dissolve completely: Ordinary alkaline products don't dissolve cuticle — depilatories at extreme pH dissolve hair, but that's a different category.
• C. Harden and seal shut: Backwards — ACIDS close/compact the cuticle. Alkalinity is used precisely because it opens the cuticle for chemicals to enter.

Answer: C. The brain and spinal cord

The CNS is the brain and spinal cord; cranial and spinal nerves form the peripheral nervous system.

• A. The brain, spinal cord, and cranial nerves: The 12 cranial nerve pairs are PERIPHERAL — the CNS boundary is brain + cord only.
• B. All nerves of the body: That describes the whole nervous system. Central = brain+cord; everything branching out = peripheral.
• D. The autonomic ganglia: Autonomic ganglia belong to the peripheral/autonomic division, not the CNS.

Answer: B. Acquired immunity

Natural (innate) immunity = born with it · acquired immunity = developed after exposure or vaccination.

• A. Natural immunity: Natural immunity is INBORN — general defenses you arrive with. Vaccine- or illness-built defense is acquired.
• C. Asymptomatic carriage: A carrier HOSTS and spreads a pathogen without symptoms — that's risk, not immunity.
• D. Passive contamination: Contamination is germs ON a surface — an infection-control term, not an immune status.

Answer: B. Cleanse, analyze, exfoliate and steam, extract, massage, mask, finish

SEQUENCE: cleanse → analyze (post-cleanse!) → exfoliate/steam → extractions (if indicated) → massage (if indicated) → mask → tone → moisturize/SPF. Analysis after cleansing — you can't read skin through makeup.

• A. Extractions before any softening: Un-softened extractions traumatize — steam/desincrustation earn their sequence slot before pressure.
• C. Analyze through full makeup: Foundation hides exactly what analysis looks for — the read happens on clean skin, always.
• D. Mask first, cleanse last: Masking over makeup treats the makeup — cleansing opens every protocol for a reason.

Answer: A. A virus (HPV)

Verruca (wart) = human papillomavirus (HPV) — contagious; no service on the lesion, refer for treatment.

• B. Blocked sweat glands: Blocked sweat ducts cause miliaria (prickly heat) — the cauliflower-textured verruca is viral tissue growth.
• C. A vitamin deficiency: No nutrient gap grows a wart — HPV does; deficiencies show as texture/color changes instead.
• D. Friction like a callus: Calluses are pressure armor; warts are INFECTIONS — filing a wart spreads virus across skin and tools.

Answer: D. Single-dip disposables, spatula-decanted palettes, and cleaned brushes

Disposables (mascara wands, lip applicators) NEVER double-dip · products decanted with a clean spatula onto a palette · brushes cleaned/disinfected between clients · sharpen pencils between uses — eyes and lips are mucous-membrane-adjacent.

• A. Using tube mascara directly on every client: A shared tube inoculates itself client to client — eye infections ride exactly this shortcut.
• B. Testing lipstick on your own lips first: Artist-to-client transfer is still cross-contamination — swatches go on sanitized palettes or hands.
• C. Blowing on brushes to clean them: Breath deposits oral flora onto face tools — cleaning means washing and disinfecting, never blowing.

Answer: A. Bitten nails

Onychophagy = bitten nails. Serviceable! Regular manicures + bitter deterrents help clients rebuild — a retention opportunity, not a refusal.

• B. Ingrown nails: Ingrown = onychoCRYPTOSIS ('hidden nail') — a growth-direction problem, not a habit.
• C. Fungal infection: Fungal disease is onychoMYCOSIS — the -phagy suffix means EATING (biting).
• D. Plate separation from the bed: Lifting plate = onychoLYSIS — the loosening disorder; biting damages from the free edge inward.

Answer: D. Gently pushes dead cuticle off the plate at a flat angle

Hold like a pencil, push cuticle gently off the plate at a LOW angle. Digging at the eponychium or scraping the plate causes damage and hangnails.

• A. Scrapes the plate surface until white dust lifts: Scraping thins the fresh, soft plate near the base — you're shaving new nail, not removing cuticle.
• B. Digs under the eponychium to clean the pocket: Digging breaks the matrix's protective seal — the gateway for paronychia infections. The living fold stays untouched.
• C. Trims hangnails with its sharp edge: Hangnail trimming belongs to sanitized NIPPERS taking only the dead tag — pushers aren't cutting tools.