California Cosmetology Written Exam flashcards

Low porosity hair has a tightly closed cuticle layer that resists the absorption of moisture and chemicals, often requiring longer processing times or added heat.

• Cuticle lies flat and closed
• Resists product penetration
• Longer processing time or heat helps open cuticle

Memory trick: Low porosity = a locked door 🔒 — you need extra time (or heat) to get the key in.

A haircut where hair is cut at an angle (commonly 45 degrees) to build weight and create a stacked, wedge-like shape shorter at the top and longer at the perimeter.

• Uses low-to-medium elevation, typically 45 degrees
• Builds weight/volume at the perimeter
• One of the four basic haircut shapes

Memory trick: 45 degrees builds the graduated 'wedge of weight.'

A contagious fungal infection of the bearded area (barber's itch), causing red, inflamed patches, pustules, and broken hairs; requires refusal of service and physician referral.

• Fungal infection, contagious
• Affects beard/mustache area
• Refuse service, refer to physician

Memory trick: BARBae = 'BARBer's itch' on the beard.

A chemical test where a hair strand is placed in a peroxide/ammonia solution to detect metallic salts, which can react dangerously with professional permanent color.

• Metallic salts are found in some progressive/home color-restoring products
• Reaction with peroxide can cause smoking, heat, breakage, or discoloration
• Test must be performed before applying peroxide-based professional tint

Memory trick: Metal + peroxide = fireworks—test before you tint.

EPA-registered disinfectants must be mixed exactly per the manufacturer's label to maintain their proven disinfecting efficacy.

• Label directions are legally required, not optional
• Over-diluting weakens the solution
• Under-diluting can also be unsafe/wasteful
• Title 16 requires proper implement disinfection procedures

Memory trick: Follow the recipe exactly—too much water ruins the disinfecting soup

Topical retinoids (e.g., tretinoin, Retin-A) thin the skin and increase sensitivity, making waxing contraindicated on treated areas due to risk of tearing.

• Common retinoids: tretinoin, retinol, adapalene
• Thins epidermis, increases sensitivity
• Waxing can tear or irritate treated skin
• Alternative: threading or tweezing may be safer

Memory trick: Retinoids make skin 'paper-thin' — no wax allowed

Recording allergies and adverse reaction history on client cards protects client safety and provides legal evidence of professional due diligence.

• Prevents repeat exposure to allergens or reactive products
• Serves as legal documentation of informed consent and care
• Should be updated at every visit with new findings

Memory trick: Record cards are the salon's memory and legal shield

Isotretinoin (Accutane) thins the epidermis and impairs healing, making waxing unsafe due to risk of tearing, burns, and scarring.

• Wait period recommended after stopping medication (often 6 months per manufacturer guidance)
• Applies to both hard and soft wax
• Alternative methods like tweezing may still carry risk; consult client's dermatologist

Memory trick: 'Retin' skin is thin — no wax within.

Isopropyl or ethyl alcohol wipes do not satisfy California's implement disinfection requirement because they are not EPA-registered hospital-grade disinfectants and evaporate too quickly for proper contact time.

• CA requires EPA-registered hospital disinfectant (bactericidal/virucidal/fungicidal)
• Alcohol evaporates fast, reducing contact time
• Alcohol wipes are not acceptable as sole disinfection method for implements

Memory trick: Alcohol alone is 'not hospital enough' for CA law

Items like orangewood sticks, buffer blocks, and pumice stones that cannot be disinfected and must be discarded after one use.

• Porous materials trap bacteria and cannot be sanitized reliably
• Must be disposed of immediately after each client
• Examples: orangewood sticks, wooden nail files, pumice stones, buffer blocks

Memory trick: Porous wood = 'once and done' — toss it after one use.

Sunburned skin has a damaged barrier and heightened sensitivity, making waxing unsafe due to increased risk of tearing, burning, and infection.

• Wait until skin fully heals before waxing
• Applies to all wax types (hard, soft, sugaring)
• Client should be rescheduled, not treated with modified technique

Memory trick: Sunburned skin says 'no' to wax — like pulling tape off a fresh burn.

For a square face, soften the strong angular jawline and forehead with rounded layers, soft waves, and asymmetrical elements such as side-swept bangs.

• Square face has equal-width forehead, cheeks, and jaw
• Angular, strong jawline is the key feature to soften
• Use curves, layers, and off-center parts to create balance

Memory trick: Square jaw = sharp box 📦 — round it out with soft curves.

A rectangular face is long with a strong angular jawline; styles should add width at the temples/cheekbones and use soft bangs to reduce length and soften angularity.

• Add width at temples and cheekbones
• Use soft, side-swept bangs to break up length
• Avoid added height or slicked-back styles

Memory trick: 'Rectangle needs a hug' — add width, soften with bangs.

Each stage of decolorization produces a specific undertone that requires its color-wheel complement to neutralize it when toning.

• Stage 6 (orange) neutralized by blue toner
• Stage 8 (pale yellow) neutralized by violet toner
• Complementary pairs sit directly opposite on the color wheel

Memory trick: 'Pale yellow needs violet' — opposite pairs cancel each other on the wheel.

A two-step haircoloring service involving lightening the hair first, followed by a separate toner application to achieve the final shade.

• Step 1: Lightener lifts natural pigment to desired stage
• Step 2: Toner neutralizes unwanted underlying pigment
• Commonly used for pale blonde results from darker natural levels

Memory trick: Double process = 'lighten then tone', two separate visits to the color bowl

The technique of separating a single natural lash from surrounding lashes using a tool before applying an extension.

• Prevents 'stickies' where multiple lashes are glued together
• Protects natural lash health and growth cycle
• Essential for proper, even extension application

Memory trick: One lash, one glue — isolate to avoid the goo.

An allergic reaction to lash adhesive that may not appear until 24-72 hours after application, presenting as itching, redness, and swelling.

• Caused by sensitivity to cyanoacrylate in adhesive
• Can occur even after multiple prior uneventful services
• Client should remove extensions and seek medical care if severe

Memory trick: The itch doesn't always come quick — allergies can be a late trick.

A color correction problem where the new growth near the scalp processes lighter or warmer than the rest of the hair, typically due to scalp heat and application technique.

• Caused primarily by body/scalp heat speeding processing at the root
• Can be worsened by overlapping onto previously colored hair
• Prevented by proper application technique, timing, and blending toward mid-shaft

Memory trick: Hot roots = scalp heat turns up the 'oven' right at the base.

For a long face shape, styles should add width at the sides and minimize height on top to create a more balanced, oval appearance.

• Long face benefits from side volume, not top height
• Bangs can also help shorten the appearance of a long face
• Goal is always to create balance toward the ideal oval shape

Memory trick: Long face, go WIDE not TALL to balance the scale.

Seborrheic dermatitis is an inflammatory skin condition causing redness and thick, oily, yellowish scales, often on the scalp, eyebrows, and hairline.

• Caused by overactive sebaceous glands
• Distinct from dry dandruff (pityriasis)
• Refer to a physician before chemical services if inflamed

Memory trick: Seborrheic = 'Sebum-heavy' — greasy yellow flakes, not dry white ones.

Developer volume determines the degree of lightening (lift) achieved during permanent haircoloring.

• 10 vol = deposit only, no lift
• 20 vol = 1-2 levels lift
• 30 vol = 2-3 levels lift
• 40 vol = up to 4 levels lift

Memory trick: 10-20-30-40 = 0-2-3-4 levels of lift, climbing the ladder.

Salons performing chemical services must maintain adequate ventilation to remove hazardous vapors and protect employee/client health.

• Ventilation is an engineering control, not a mask for odor
• Required for services like relaxers, acrylics, perms
• Works alongside PPE and SDS review
• Reduces respiratory and headache-related complaints

Memory trick: Ventilation = open windows and fans clear the fume cloud

Disinfectant solutions must be stored in covered, labeled containers to prevent evaporation and contamination that weaken disinfecting effectiveness.

• Keep containers covered/closed when not in use
• Evaporation reduces active ingredient concentration
• Label containers with contents and mix date

Memory trick: 'Lid on tight keeps the germs out of sight.'

The chemical reaction where a reducing agent (e.g., ammonium thioglycolate) adds hydrogen to disulfide bonds, breaking them into two cysteine units.

• Occurs during the processing step of a perm
• Converts cystine into cysteine
• Neutralizer later reverses this through oxidation

Memory trick: 'Reduction adds Hydrogen, like Handing over a gift'

Choosing styling products based on hair density and texture ensures desired results without unwanted weight or buildup.

• Fine/limp hair needs lightweight volumizing products (mousse, root lifters)
• Coarse/thick hair can handle heavier creams, pomades, and waxes
• Heavy oils and waxes flatten fine hair and reduce volume

Memory trick: 'Fine hair, feather-light foam' — mousse for volume without weight.

Safe gel removal involves lightly buffing the top coat, wrapping in acetone-soaked cotton with foil for 10-15 minutes, then gently pushing off softened product rather than filing or prying it off.

• Breaking the seal helps acetone penetrate faster
• Foil traps heat to speed the softening process
• Never force or file off gel that hasn't fully softened

Memory trick: Buff, wrap, wait, gently push away

Cal/OSHA requires Safety Data Sheets for hazardous chemicals to be immediately and readily accessible to all employees during working hours.

• SDS must be kept in a binder or accessible electronic system on-site
• Employees must be trained on how to read and locate SDS
• SDS provides hazard info: composition, first aid, fire, handling, storage
• Products must also be properly labeled per GHS standards

Memory trick: 'SDS at your fingertips' — always within reach, never locked away.

Redness, swelling, itching, or blisters at a patch test site indicate an allergy to aniline derivative dyes; the color service must not be performed.

• Patch test must be checked 24-48 hours after application
• Positive reaction = redness, swelling, itching, blisters
• Service must be canceled if reaction is positive

Memory trick: Red and itchy? Skip the dye — allergy alert!

Overloading electrical circuits with too many devices, especially high-wattage tools, increases fire risk from overheating.

• Avoid daisy-chaining power strips
• Inspect cords for fraying regularly
• Keep flammables away from heat sources
• Keep fire extinguisher accessible

Memory trick: Overloaded outlet = too many plugs = spark and fire

A skin test performed 24-48 hours before using aniline derivative tints to check for allergic reactions before full application.

• Applied behind ear or on inner elbow
• Client must wait full 24-48 hours before service
• Any redness, swelling, or itching means tint should not be used

Memory trick: Two days to test, before you dye the rest.

UV light cabinets are permitted in CA salons only for dry storage of already-disinfected implements, not as a disinfection method itself.

• Immersion in EPA-registered disinfectant is still required first.
• UV alone does not satisfy Title 16 disinfection standards.
• Mislabeling UV storage as 'disinfection' is a common inspection violation.

Memory trick: 'UV keeps it dry, disinfectant keeps it clean' — two separate jobs.

A strand test applies the actual color or chemical formula to a small hair section to preview the final result and determine correct processing time before full application.

• Different purpose from an allergy patch test
• Especially important on previously treated or metallic-dyed hair
• Prevents unexpected color results or damage across the whole head

Memory trick: 'Test a strand, preview the plan' before coloring the whole head.

Fire extinguishers are classified by fire type: Class A for ordinary combustibles, Class B for flammable liquids, Class C for electrical fires, and ABC combo units cover most salon hazards.

• Never use water on an electrical fire
• Class C extinguishers use non-conductive agents
• ABC combo extinguishers are common in salons

Memory trick: 'Electrical spark? Grab the C, not the H2O.'

The direction hair naturally grows and lies without tension; must be considered during haircutting to avoid uneven results.

• Also called natural growth direction
• Cutting against it can cause uneven layers
• Analyzed along with whorls, cowlicks, and widow's peaks

Memory trick: Natural FALL = let hair FALL where it wants before you cut.

Colors directly opposite each other on the color wheel neutralize one another when combined.

• Red neutralizes green
• Blue neutralizes orange
• Yellow neutralizes violet

Memory trick: Blue Beats Orange (Blue cancels Orange brassiness).

A disease that can be transmitted from one person to another through contact, air, or contaminated objects.

• Examples: ringworm, cold sores, pediculosis
• Reason for service refusal in salons
• Standard precautions help reduce transmission risk

Memory trick: 'Communicable' sounds like 'communicate' — it passes between people.

Strip lashes should be measured and trimmed to fit the width of the client's eyelid before adhesive is applied.

• Prevents strip from poking inner corner
• Prevents overhang past outer corner
• Measured against closed eyelid before application

Memory trick: Trim to fit, or the lash won't sit.

The removable screen or filter in a foot spa basin traps debris and biofilm and must be cleaned and disinfected separately between each client.

• Removed and cleaned after every client
• Disinfected with EPA-registered hospital disinfectant
• Prevents biofilm buildup that basin cleaning alone may miss

Memory trick: No screen left unscrubbed — pull it out, scrub it out.

The eponychium is living skin at the base of the nail protecting the matrix; the cuticle is dead, colorless tissue adhering to the nail plate that can be trimmed.

• Never cut the eponychium — risk of infection
• Cuticle can be gently pushed and trimmed if overgrown
• Both help seal out bacteria at the nail base

Memory trick: E for Eponychium, E for 'never Excise' — it's alive!

An alkalizing agent that raises hair pH, swelling the cuticle to allow peroxide and dye penetration into the cortex.

• Raises pH to approximately 9-10
• Allows small dye precursor molecules to enter cortex
• Ammonia-free formulas use substitutes like MEA (monoethanolamine)

Memory trick: Ammonia opens the door (cuticle) so peroxide and dye can walk into the cortex

Alopecia areata is a non-contagious autoimmune disorder causing sudden, smooth, round patches of hair loss without scaling or inflammation.

• Non-contagious, so service may proceed
• No scaling, redness, or itching present
• Handle affected areas gently, avoid harsh chemicals

Memory trick: Alopecia Areata = 'A' for Autoimmune — smooth circles, no scale, no fear of spreading.

California law requires foot spas to be physically cleaned of debris and then disinfected with an EPA-registered hospital disinfectant for the full label contact time between every client.

• Must be done after every single client
• Debris removal comes before disinfection
• End-of-day cleaning is also required in addition to between-client steps

Memory trick: Clean, then kill — never skip the drill

The brief transitional phase of the hair growth cycle where the follicle shrinks and detaches from its blood supply, lasting about 1-3 weeks.

• Occurs between anagen and telogen
• Follicle shrinks and separates from blood supply
• Affects about 1% of hairs at any time

Memory trick: CATagen is the CATnap between growing and resting.

A hospital-grade disinfectant label must display an EPA registration number, confirming it has been tested and registered for bactericidal, virucidal, and fungicidal efficacy.

• Required on all hospital disinfectant labels
• Confirms broad-spectrum kill claims
• California mandates EPA-registered disinfectants for implements

Memory trick: 'No EPA number, no hospital power.'

Coarse hair has the largest diameter of the three texture types and a thick, resistant cuticle layer that requires more time and product to process.

• Largest diameter among fine, medium, coarse
• Most resistant to chemical penetration
• Requires longer processing time

Memory trick: Coarse = Cable — thick and takes time to bend.

HBV is a bloodborne pathogen that can survive on dry surfaces for at least 7 days, making it far more resilient than HIV and a major concern for salon infection control.

• HBV survives ~7 days on dry surfaces
• HBV is more resilient than HIV
• Proper disinfection of implements is required to prevent transmission

Memory trick: HBV: 'Hangs Back Vigorously' for days on surfaces

A common, non-contagious scalp condition characterized by small, white, dry scales and mild itching caused by excessive shedding of epidermal cells.

• Non-contagious, safe to service
• Small, dry white flakes
• Different from oily dandruff (pityriasis steatoides)

Memory trick: 'Simple and dry, flakes fly by' — simplex means dry dandruff.

Clipper guards are numbered attachments that determine cut length; each increasing number generally adds about 1/8 inch of length, with #1 leaving ~1/8 inch and #2 leaving ~1/4 inch.

• Guard numbers correspond to fractional inch lengths
• #1 ≈ 1/8 inch, #2 ≈ 1/4 inch, #3 ≈ 3/8 inch
• Used to achieve even, consistent lengths in clipper cuts

Memory trick: Guard number x 1/8 inch = length left behind.

California law requires that multi-use, nonporous implements be completely immersed in an EPA-registered disinfectant solution for the full contact time listed on the label.

• Full immersion is mandatory, not spraying/wiping
• Contact time must match EPA label
• Applies to non-electrical multi-use tools like shears, nippers, combs

Memory trick: Dunk it, don't just dab it

California regulation requiring salons to stop service, use gloves, treat the wound with antiseptic and bandage, and dispose of or disinfect any contaminated tools/materials immediately after a blood exposure incident.

• Single-use items contacting blood must be discarded immediately
• Multi-use tools must be cleaned and disinfected per EPA-registered disinfectant protocol
• Service should not resume until the area is treated and contamination addressed

Memory trick: See blood? Stop, glove up, bandage, and clean up before continuing.

File grit numbers indicate coarseness: lower numbers are coarser (for enhancements/removal) and higher numbers are finer (for natural nail smoothing and shine).

• 80-100 grit: shaping/reducing acrylic enhancements
• 150-180 grit: blending and shaping enhancements
• 240+ grit: light buffing/smoothing natural nails

Memory trick: Higher number, gentler touch — natural nails need it as such

California regulations prohibit cosmetology services on skin or scalp areas with open sores, abrasions, or infections to prevent spread of infection or bloodborne pathogen exposure.

• Applies to scalp, skin, and nail services
• Refer client to physician for treatment
• Service may resume only after healing/clearance
• Protects both client and licensee from infection risk

Memory trick: Open wound = closed door to service.

Reinserting a used applicator into a shared product container contaminates the product for all subsequent clients and violates infection-control standards.

• A new, clean applicator must be used for each dip into shared products.
• Applies to wax, creams, and any multi-use container.
• Prevents spread of bacteria, fungi, and viruses between clients.

Memory trick: 'One stick, one dip' — never let a used stick touch the shared pot again.

A deposit-only color with no ammonia or peroxide that fades gradually over 4-6 shampoos.

• Cannot lighten natural hair color
• Smaller molecules than temporary color penetrate slightly
• Good for blending small amounts of gray or refreshing tone

Memory trick: Semi = 'sometimes stays', fades slowly over several washes

A natural hair removal method using a sugar-based paste applied and removed in the direction of hair growth, reducing breakage and irritation.

• Made from sugar, lemon, and water
• Water-soluble, easy to clean up
• Applied at body temperature, gentler than hot wax

Memory trick: Sugar goes WITH the grain, wax goes AGAINST it.

A tactile assessment of the hair cuticle's ability to absorb moisture, performed by sliding fingers along a dry strand from ends to scalp.

• Rough feel = raised cuticle = high porosity
• Smooth feel = tight cuticle = low porosity
• Affects processing time for chemical services
• High porosity absorbs product faster and may over-process

Memory trick: Porosity = feel the roughness of the roof shingles (cuticle).

A quality-control technique in foiling/highlighting where sections are taken in a different direction than the original pattern to verify even coverage and catch missed spots.

• Performed after initial foil placement
• Sections taken perpendicular or diagonal to original pattern
• Ensures no gaps or uneven color distribution

Memory trick: Cross-check = 'double-check' your work from a new angle.

California salons must keep used implements in a closed, labeled container separate from disinfected tools until cleaning and disinfection occur.

• Prevents cross-contamination between clean and dirty tools.
• Container must be labeled (e.g., 'used' or 'soiled').
• Different from the labeled container for storing already-disinfected implements.

Memory trick: 'Dirty in one box, clean in another' — never mix the two labeled bins.

A skin test performed 24-48 hours before applying aniline derivative tint to check for allergic sensitivity to PPD.

• Required before each new color application
• Tests for PPD allergy reaction
• Positive test = redness, itching, swelling - do not proceed

Memory trick: Two days' wait keeps allergies at bay.

A fixed guideline that does not move as the haircut progresses; all other sections are combed to it, commonly used for one-length/blunt haircuts.

• Does not move throughout the cut
• Common in blunt/one-length haircuts
• Opposite of a traveling guideline used in layered cuts

Memory trick: Stationary = 'stays put' like a stationary bike.