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AL Cosmetology study materials
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AL Cosmetology practice questions

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Question 1Infection Control, Sanitation, and Safety Practices

Which term describes the level of decontamination that kills most microorganisms on a nonporous implement but does not destroy bacterial spores?

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

Explanation

Disinfection uses an EPA-registered product to destroy most pathogens on nonporous surfaces, but it does not reliably kill spores. Sterilization is a stronger process that destroys all microorganisms, including spores.

Question 2Infection Control, Sanitation, and Safety Practices

Which federal agency reviews and registers the chemical disinfectants used in salons?

  1. Food and Drug Administration
  2. Centers for Disease Control and Prevention
  3. Environmental Protection Agency Correct answer.
  4. Occupational Safety and Health Administration

Explanation

The EPA registers disinfectants as antimicrobial pesticides and requires an EPA registration number and supported efficacy claims on the label. OSHA sets workplace safety rules and the CDC issues guidance, but neither registers disinfectant products.

Question 3Infection Control, Sanitation, and Safety Practices

A technician uses a porous emery board on a client's nails. What must be done with the board afterward?

  1. Soak it in quat disinfectant for ten minutes
  2. Discard it in a covered waste container Correct answer.
  3. Store it in a closed drawer for the next client
  4. Scrub it with soap and water and reuse it

Explanation

Porous items absorb liquids and cannot be reliably cleaned and disinfected, so they are single-use and must be thrown away after one client. Only nonporous implements can be disinfected and reused.

Question 4Infection Control, Sanitation, and Safety Practices

When is a cosmetologist required to wash their hands with soap and running water?

  1. Only at the start and end of the workday
  2. Before and after every client service Correct answer.
  3. Only when hands are visibly soiled
  4. Only after handling chemicals

Explanation

Hands are washed before and after each client contact, and also after removing gloves, after using the restroom, and after handling soiled items. Visibly soiled hands must be washed at once, but visible soil is not the only trigger for handwashing.

Question 5Infection Control, Sanitation, and Safety Practices

What is the main purpose of a Safety Data Sheet (SDS) for a salon product?

  1. To explain the product's hazards and safe handling Correct answer.
  2. To replace the manufacturer's use instructions
  3. To certify that the product is EPA registered
  4. To record each employee's vaccination history for the year

Explanation

An SDS supplies standardized information on a product's hazards, first-aid measures, storage, and safe handling, and OSHA requires that employees have access to it. It does not certify registration and does not take the place of label directions.

Question 6Infection Control, Sanitation, and Safety Practices

While shaving a client's neck, a barber nicks the client and a drop of blood lands on the barber's bare hand. What is the first appropriate action?

  1. Report the incident to OSHA before doing anything else
  2. Apply a bandage over the area and finish the service first
  3. Wipe the hand with a disinfectant towelette and keep working
  4. Wash the skin immediately with soap and running water Correct answer.

Explanation

Blood on skin is washed immediately with soap and running water, followed by reporting the exposure and seeking medical follow-up as needed. Disinfectants are formulated for surfaces and implements and are not for use on skin.

Question 7Infection Control, Sanitation, and Safety Practices

Why must a workstation with dried blood on it be treated as infectious?

  1. Only fresh, wet blood can transmit bloodborne viruses
  2. Dried blood stops being infectious once it changes color
  3. Bloodborne pathogens die within minutes on a dry surface
  4. Hepatitis B virus can survive in dried blood for days Correct answer.

Explanation

Hepatitis B virus can remain infectious in dried blood on surfaces for several days, which is why all blood is cleaned up and the surface then disinfected with an EPA-registered product. Visible drying does not make blood safe.

Question 8Infection Control, Sanitation, and Safety Practices

When should the disinfectant solution in an open implement jar be replaced?

  1. Only when the printed expiration date passes
  2. When it becomes cloudy or contains debris Correct answer.
  3. Whenever the solution looks clear
  4. At the end of each week, regardless of use

Explanation

Disinfectants are weakened by organic debris and by topping off with fresh solution, so the jar is emptied, cleaned, and refilled at the interval on the label or sooner if the solution looks cloudy or dirty. A routine calendar habit or the bottle's date alone ignores in-use contamination.

Question 9Infection Control, Sanitation, and Safety Practices

What is the purpose of an ultrasonic cleaner in a salon?

  1. To disinfect porous items such as foam separators
  2. To loosen debris from implements before disinfection Correct answer.
  3. To dry implements after they are removed from disinfectant
  4. To sterilize metal implements without chemicals

Explanation

An ultrasonic cleaner uses sound waves in a cleaning solution to lift debris, oil, and product residue from implements, and it is a cleaning step only. Disinfection with an EPA-registered product must follow.

Question 10Infection Control, Sanitation, and Safety Practices

How should clean, disinfected implements be stored between clients?

  1. In a drawer together with used tools
  2. On a towel at the workstation
  3. In a clean, covered container Correct answer.
  4. Left in the disinfectant jar overnight

Explanation

Disinfected implements are kept in a clean, closed container or drawer that is separate from soiled items so they do not become recontaminated before use. Open storage and contact with used tools defeat the disinfection step.

Question 11Infection Control, Sanitation, and Safety Practices

What is the accepted role of ultraviolet light cabinets in salon infection control?

  1. They are required by OSHA for all reusable tools
  2. They cannot replace cleaning and disinfection Correct answer.
  3. They sterilize metal implements when used overnight
  4. They disinfect porous items that cannot be soaked

Explanation

UV cabinets do not penetrate debris or reach all surfaces reliably, so they are not accepted as a substitute for cleaning and EPA-registered disinfection or for sterilization. Relying on a UV cabinet alone leaves implements contaminated.

Question 12Infection Control, Sanitation, and Safety Practices

Standard precautions require the cosmetologist to treat which fluids as potentially infectious?

  1. Only blood that is visible on a surface
  2. Only fluids from clients who disclose an illness
  3. All blood and body fluids, from every client Correct answer.
  4. Only fluids from clients with a known diagnosis

Explanation

Standard or universal precautions assume that every client's blood and body fluids may carry pathogens, so barriers and hand hygiene are used consistently rather than being based on appearance or disclosure. Many carriers have no visible symptoms and may not know their status.

Question 13Infection Control, Sanitation, and Safety Practices

What must be done immediately after removing disposable gloves?

  1. Save the gloves if they are not torn
  2. Rinse the gloves and hang them to dry
  3. Apply hand lotion and return to the client
  4. Wash hands with soap and running water Correct answer.

Explanation

Gloves can develop small tears and can become contaminated during removal, so hands are washed after the gloves come off and before touching anything else. Gloves are single-use items and are never washed for reuse.

Question 14Infection Control, Sanitation, and Safety Practices

What is the correct procedure for a foot spa basin between clients?

  1. Run the jets briefly with plain water and let the basin air dry
  2. Wipe the basin with a towel and spray it with air freshener
  3. Clean it, then disinfect for the labeled contact time Correct answer.
  4. Rinse the basin with warm water and refill it for the next client

Explanation

The basin and any removable parts are first cleaned of debris and biofilm, then treated with an EPA-registered hospital disinfectant for the full contact time on the label. Rinsing or running the jets with plain water leaves organisms behind in the jets and crevices.

Question 15Infection Control, Sanitation, and Safety Practices

An implement is lifted out of the disinfectant before the labeled contact time has elapsed. What should be done?

  1. Restart the full contact time in fresh solution Correct answer.
  2. Consider it disinfected because it was fully submerged
  3. Rinse it thoroughly and place it in storage
  4. Add more disinfectant and count the time already spent

Explanation

A disinfectant needs the full label contact time at the correct use concentration to kill the target organisms, so an interrupted soak must be started over in fresh solution. Partial exposure does not guarantee disinfection.

Question 16Infection Control, Sanitation, and Safety Practices

Which product is appropriate for disinfecting a metal implement that has contacted a client's blood?

  1. A hospital disinfectant with an HIV/HBV claim Correct answer.
  2. An alcohol wipe followed by a rinse in water
  3. Soap and water alone, then air drying on a towel
  4. A quaternary ammonium spray for housekeeping surfaces

Explanation

Items contaminated with blood require an EPA-registered hospital disinfectant carrying a specific label claim for HIV and HBV, or they must be sterilized. General cleaners and alcohol wipes do not meet that requirement.

Question 17Infection Control, Sanitation, and Safety Practices

Which practice best reduces inhalation exposure to vapors from nail products?

  1. Working in a well-ventilated area Correct answer.
  2. Keeping product containers uncapped
  3. Storing chemicals near a heat source
  4. Covering the nose with a cotton scarf

Explanation

Ventilation, including local exhaust where required, carries vapors away from the breathing zone as directed on the label. Uncapped containers and heat increase evaporation, and cloth over the face is not respiratory protection.

Question 18Infection Control, Sanitation, and Safety Practices

A blow dryer's power cord is frayed near the plug. What is the correct action?

  1. Wrap the fray with electrical tape and keep using it
  2. Plug it into a GFCI outlet and continue using it
  3. Take it out of service until repaired or replaced Correct answer.
  4. Use it only on the lowest heat setting

Explanation

A damaged cord is a shock and fire hazard and must be removed from service until a qualified person repairs it or it is replaced. GFCI protection reduces but does not eliminate the risk from damaged wiring.

Question 19Infection Control, Sanitation, and Safety Practices

Why must implements be cleaned before they are placed in a disinfectant?

  1. Cleaning removes all bacterial spores from the surface
  2. Cleaning sterilizes the implement, so disinfection becomes optional
  3. Disinfectants work only on completely dry surfaces
  4. Debris and oils shield organisms and weaken disinfectant Correct answer.

Explanation

Oils, product residue, and skin debris protect microorganisms and can neutralize active ingredients, so the disinfection step is reliable only on a pre-cleaned item. Cleaning removes debris but does not sterilize or eliminate spores.

Question 20Infection Control, Sanitation, and Safety Practices

How should a used razor blade be discarded?

  1. In the disinfectant jar with other implements
  2. In the salon's regular trash can
  3. Wrapped in a paper towel in a wastebasket
  4. In a puncture-resistant sharps container Correct answer.

Explanation

Sharp items can injure anyone handling waste, so they go into a closable, puncture-resistant sharps container rather than the trash, linens, or disinfectant. The container is sealed and disposed of according to local rules.

Question 21Infection Control, Sanitation, and Safety Practices

Which personal protective equipment is appropriate when pouring a concentrated salon chemical?

  1. A cloth apron only
  2. Gloves and safety glasses Correct answer.
  3. No protection for diluted products
  4. A dust mask alone

Explanation

Concentrated products can splash and irritate skin and eyes, so gloves and eye protection are the minimum, and the label may also call for an apron or respirator. A dust mask alone protects neither the eyes nor the skin.

Question 22Infection Control, Sanitation, and Safety Practices

How should soiled towels and capes be handled after a service?

  1. Shaken out and reused if they look clean
  2. Stacked on the clean linen shelf until the next laundry day
  3. Stored in the bathroom to keep them out of sight
  4. Placed in a closed container away from clean linens Correct answer.

Explanation

Soiled linens go into a closed hamper or container separate from clean linens, then are laundered with detergent and hot water. Shaking spreads organisms, and reusing unwashed linens spreads contamination between clients.

Question 23Infection Control, Sanitation, and Safety Practices

Under OSHA's bloodborne pathogens standard, when must an employer offer the hepatitis B vaccine to an employee with occupational exposure risk?

  1. Only after the employee has worked one full year
  2. Within 10 working days of assignment, at no cost Correct answer.
  3. Only if the employee requests it in writing
  4. Only after a needlestick or other exposure incident

Explanation

The standard requires that the vaccine, along with training, be offered free of charge within 10 working days of initial assignment to duties with exposure risk. The employee may decline in writing, but the offer must still be made.

Question 24Infection Control, Sanitation, and Safety Practices

A client arrives for a haircut with an inflamed, weeping rash on the scalp. What is the appropriate response?

  1. Double the usual disinfectant strength afterward
  2. Proceed but avoid combing the affected area
  3. Postpone the service and refer to a physician Correct answer.
  4. Apply a medicated ointment and continue the service

Explanation

Weeping or inflamed skin lesions may be contagious and are a contraindication for service, so the appointment is postponed and the client is referred for medical evaluation. Disinfecting afterward does not make it acceptable to work on infected skin.

Question 25Infection Control, Sanitation, and Safety Practices

A client mentions a latex allergy. Which gloves should the cosmetologist use?

  1. No gloves, with extra handwashing
  2. Powdered latex gloves
  3. Vinyl gloves worn over latex
  4. Nitrile gloves Correct answer.

Explanation

Nitrile is a latex-free synthetic glove that provides barrier protection for clients and workers with latex sensitivity. Latex-containing gloves can trigger a reaction even when layered.

Question 26Infection Control, Sanitation, and Safety Practices

What is the minimum amount of time a cosmetologist should lather and scrub the hands with soap and warm water during routine handwashing?

  1. 2 minutes
  2. 5 seconds
  3. 20 seconds Correct answer.
  4. 60 seconds

Explanation

Routine handwashing should last at least 20 seconds of lathering and scrubbing, including the backs of the hands, between the fingers, and under the nails, before rinsing under running water. This contact time is what allows soap and friction to lift soil and microorganisms from the skin.

Question 27Infection Control, Sanitation, and Safety Practices

Where must the safety data sheets for products used in a salon be kept?

  1. Locked in the salon owner's private files
  2. At the supplier's warehouse for reference
  3. In the manager's home office
  4. On the premises, accessible to all employees Correct answer.

Explanation

Safety data sheets must be kept in the workplace and be immediately available to employees during their work shift, so they can be consulted during a spill, splash, or exposure. Locking them away or storing them off-site defeats their purpose as an emergency reference.

Question 28Infection Control, Sanitation, and Safety Practices

A drop of chemical wave solution splashes into a client's eye during a service. What should the cosmetologist do first?

  1. Have the client lie down and blink rapidly for several minutes
  2. Flush the eye with lukewarm water for at least 15 minutes Correct answer.
  3. Wipe the eye gently with a dry cotton pad
  4. Place a soothing moisturizing eye drop in the affected eye

Explanation

Chemical splashes to the eye are flushed immediately with lukewarm running water for at least 15 minutes to dilute and carry away the product, and the client should then be referred for medical evaluation. Delaying the flush allows the chemical to continue damaging tissue.

Question 29Infection Control, Sanitation, and Safety Practices

Which item must be discarded after a single client because it is porous and cannot be adequately disinfected?

  1. A metal tail comb
  2. An emery board Correct answer.
  3. A stainless steel cuticle nipper
  4. A glass manicure bowl

Explanation

Porous items such as emery boards, wooden sticks, and cotton products absorb moisture and microorganisms and cannot be reliably cleaned and disinfected, so they are used once and thrown away. Nonporous implements made of metal or glass can be cleaned and disinfected for reuse.

Question 30Infection Control, Sanitation, and Safety Practices

A cosmetologist mixes a disinfectant much stronger than the label directs, assuming a stronger solution kills pathogens faster. Why is this reasoning faulty?

  1. It makes the solution unusable after the first client
  2. It increases the risk of electrical shock at the station
  3. It may corrode implements and void the product's kill claims Correct answer.
  4. It evaporates faster and leaves a sticky residue on surfaces

Explanation

Disinfectants are formulated and tested at a specific dilution, contact time, and temperature; deviating from the label means the product has not been shown to kill the listed pathogens and may damage implements or irritate skin. Effective disinfection comes from following label directions, not from exceeding the concentration.

Question 31Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

How many bones make up the adult human skeleton?

  1. 186
  2. 246
  3. 226
  4. 206 Correct answer.

Explanation

The adult skeleton is made up of 206 bones divided into the axial and appendicular divisions. Infants start with roughly 270 separate bones that later fuse during growth.

Question 32Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

Which branch of science is concerned with the structure of the human body and the relationship between its parts?

  1. Anatomy Correct answer.
  2. Histology
  3. Physiology
  4. Cytology

Explanation

Anatomy is the study of body structure and the spatial relationships among body parts. Physiology, by contrast, deals with how those structures function.

Question 33Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

What is the basic structural and functional unit of all living matter?

  1. Tissue
  2. Cell Correct answer.
  3. Organ
  4. Molecule

Explanation

The cell is the smallest unit that can carry out all the activities of life. Larger structures such as tissues and organs are built from groups of cells.

Question 34Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

Which layer of the skin is the outermost and thinnest?

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

Explanation

The epidermis is the thin, outermost layer of the skin and contains no blood vessels. It relies on the underlying dermis for nourishment.

Question 35Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

The visible portion of the nail that rests on the nail bed is called the:

  1. Cuticle
  2. Lunula
  3. Nail matrix
  4. Nail plate Correct answer.

Explanation

The nail plate is the hardened, visible body of the nail that covers the nail bed. It is produced by cells in the hidden matrix below the cuticle area.

Question 36Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

A solution with a pH of 3 is best described as:

  1. Slightly alkaline
  2. Acidic Correct answer.
  3. Neutral
  4. Strongly alkaline

Explanation

On the pH scale, values below 7 are acidic and values above 7 are alkaline. A pH of 3 is therefore acidic, and lower numbers indicate stronger acidity.

Question 37Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

Which type of electrical current flows in one direction only?

  1. Direct current Correct answer.
  2. Alternating current
  3. Tesla current
  4. High-frequency current

Explanation

Direct current moves constantly in a single direction from the negative pole to the positive pole. Alternating current repeatedly reverses direction.

Question 38Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

Which muscle is primarily responsible for closing the jaw?

  1. Frontalis
  2. Occipitalis
  3. Masseter Correct answer.
  4. Platysma

Explanation

The masseter is the chewing muscle that raises the lower jaw to close the mouth. It is one of the strongest muscles of the face.

Question 39Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

Which of these products is a suspension rather than a solution?

  1. Salt water
  2. Calamine lotion Correct answer.
  3. Isopropyl alcohol
  4. Distilled white vinegar

Explanation

A suspension contains solid particles that are dispersed in a liquid but are large enough to settle out on standing, which is why calamine lotion must be shaken. True solutions stay uniformly mixed because the dissolved particles are extremely small.

Question 40Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

A surfactant molecule helps cleanse the hair because it has:

  1. Two water-attracting heads joined together
  2. A positively charged head and tail
  3. Two oil-attracting tails joined together
  4. A hydrophilic head and a hydrophobic tail Correct answer.

Explanation

A surfactant has a water-loving (hydrophilic) head and an oil-loving (hydrophobic) tail. The tail attaches to oily soil while the head stays with water, allowing the soil to be rinsed away.

Question 41Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

In galvanic current, the electrode that attracts positive ions and produces an alkaline reaction at the skin is the:

  1. Modality
  2. Cathode Correct answer.
  3. Insulator
  4. Anode

Explanation

The cathode is the negative pole, so it draws positive ions toward it and creates an alkaline reaction in the tissue. The positive anode does the opposite, producing an acidic reaction.

Question 42Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

Hydrogen peroxide is added to a hair color formula mainly to:

  1. Add moisture to the cuticle
  2. Slow the processing time
  3. Neutralize the natural alkalinity of the dye
  4. Develop the color by oxidizing the dye Correct answer.

Explanation

Hydrogen peroxide is the developer; it supplies oxygen that oxidizes the dye precursors so color molecules form inside the cortex. It also lightens natural pigment when used at higher volumes.

Question 43Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

The chief motor nerve of the face, which supplies the muscles of facial expression, is the:

  1. Facial nerve Correct answer.
  2. Brachial nerve
  3. Trigeminal nerve
  4. Sciatic nerve

Explanation

The facial nerve is the chief motor nerve of the face and controls the muscles that produce expressions. The trigeminal nerve is the chief sensory nerve of the face.

Question 44Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

The artery that supplies blood to the head, face, and neck is the:

  1. Ulnar artery
  2. Common carotid artery Correct answer.
  3. Radial artery
  4. Superficial temporal artery

Explanation

The common carotid artery is the main vessel carrying blood to the head, face, and neck, and it branches into internal and external carotids. The superficial temporal artery is only a smaller branch of that system.

Question 45Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

Sudoriferous glands are found in the greatest numbers on the:

  1. Scalp and forehead
  2. Palms and soles Correct answer.
  3. Nape of the neck
  4. Back and shoulders

Explanation

Sudoriferous (sweat) glands are most densely concentrated on the palms of the hands and the soles of the feet. These areas contain thousands of glands per square inch.

Question 46Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

An emulsion is formed when:

  1. A gas is trapped inside a thick liquid base
  2. A solid is dissolved completely and evenly in a liquid
  3. Two immiscible liquids united by an emulsifier Correct answer.
  4. Two miscible liquids are blended together

Explanation

An emulsion consists of two liquids that do not normally mix, held in a stable blend by an emulsifying agent. Salad dressing and many lotions are common examples.

Question 47Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

An alkaline solution will cause the hair cuticle to:

  1. Swell and open Correct answer.
  2. Harden and flatten
  3. Remain unchanged
  4. Tighten and close

Explanation

Alkaline substances raise the pH of the hair, causing the cuticle scales to swell and lift. This opening allows water, color, and waving solutions to penetrate the cortex.

Question 48Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

The unit that measures the resistance of an electrical current is the:

  1. Watt
  2. Ampere
  3. Volt
  4. Ohm Correct answer.

Explanation

Resistance to current flow is measured in ohms. Amperes measure current strength, volts measure the force that pushes the current, and watts measure power.

Question 49Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

The small cone-shaped structure at the base of the hair follicle that contains capillaries and delivers nutrients to the hair is the:

  1. Hair shaft
  2. Arrector pili
  3. Sebaceous gland
  4. Hair papilla Correct answer.

Explanation

The hair papilla sits at the bottom of the follicle and is fed by a network of capillaries that nourish the growing hair. Cells in the bulb around the papilla divide to build the hair strand.

Question 50Scientific Concepts: Anatomy, Physiology, Chemistry, and Electricity

An atom that has gained or lost one or more electrons is called a(n):

  1. Molecule
  2. Isotope
  3. Compound
  4. Ion Correct answer.

Explanation

Gaining or losing electrons gives an atom an electrical charge, and a charged atom or group of atoms is an ion. Positive ions have lost electrons, while negative ions have gained them.