Free Cosmetology Theory Practice Questions

Sample Practice Questions

Try these 10 sample questions from the Cosmetology Theory practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1An Ohio cosmetologist is selecting a disinfectant for a nonporous comb that contacted intact skin. Which label claim fits the board's ordinary disinfectant standard?

   1. A. Kills most bacteria, fungi, and viruses on nonporous surfaces
   2. B. Carries a hospital-level blood-contact claim
   3. C. Carries a sterilant claim against all microbial life
   4. D. Is labeled only for cleaning visible soil

   Answer: A

   Explanation: Ohio defines an appropriate disinfectant as an EPA-registered product used to destroy or kill most bacteria, fungi, and viruses on nonporous surfaces and used according to its directions. Source wording: "an EPA-registered disinfectant used to destroy or kill most bacteria, fungi, and viruses on non-porous surfaces and is mixed and used according".

   Reference: Chapter 4713-1 - Ohio Administrative Code | Ohio Laws — O.A.C. 4713-1-01(E)(1)

2. 2Why can an alkaline shampoo make hair more difficult to comb?

   1. A. It turns terminal hair into vellus hair
   2. B. It permanently increases follicle count
   3. C. It eliminates all water from the cortex
   4. D. It can increase the hair's negative charge and inter-fiber repulsion

   Answer: D

   Explanation: A review in the NIH literature explains that alkaline pH can increase negative charge on hair, promoting repulsion, tangling, and frizz. No verbatim quotation is included because this official source has no readable text copy in the work directory; it was verified through server-side official-page access.

   Reference: Discussion—wet-hair fragility and cuticle scales — Discussion—pH, electrical charge, and fiber friction

3. 3Which document controls the cleaning method for salon equipment such as a blow dryer?

   1. A. The safety data sheet
   2. B. The disinfectant product label
   3. C. The manufacturer's or owner's manual
   4. D. The equipment warranty

   Answer: C

   Explanation: Ohio requires salons to keep the equipment manual and follow the manufacturer's cleaning suggestions. Source wording: "shall maintain a copy of the manufacturer's/owner's manual for all equipment in service and shall follow the manufacturer's suggestions for cleaning".

   Reference: Chapter 4713-15 - Ohio Administrative Code | Ohio Laws — O.A.C. 4713-15-15(A)

4. 4Which sequence orders human structural organization from simplest to most complex?

   1. A. Cell, tissue, organ, system
   2. B. Tissue, cell, system, organ
   3. C. Organ, tissue, cell, system
   4. D. System, organ, tissue, cell

   Answer: A

   Explanation: NCI's anatomy review identifies cells, tissues, organs, and systems as the body's four major structural levels in increasing organization. Source wording: "A system is an organization of varying numbers and kinds of organs so arranged that together they can perform complex functions for".

   Reference: Review: Introduction to the Human Body | SEER Training — Review: Introduction to the Human Body

5. 5What application precaution helps reduce allergic reactions to methacrylate monomers in artificial-nail products?

   1. A. Apply the monomer over irritated skin
   2. B. Avoid contact with the surrounding skin
   3. C. Increase contact with the nail folds
   4. D. Mix the monomer with hand sanitizer

   Answer: B

   Explanation: FDA advises avoiding skin contact with methacrylate monomers because contact can increase the chance of an allergic reaction. Source wording: "avoid contact with the skin in order to minimize the chance of an allergic reaction".

   Reference: Nail Care Products | FDA — Methacrylate Monomers in Artificial Nails

6. 6A previously used, properly laundered cape will be reused for an Ohio haircut. What must be placed between the cape and the client's skin?

   1. A. A foil strip or plastic wrap
   2. B. A cotton coil or end paper
   3. C. A neck strip or clean towel
   4. D. A finger guard or nail form

   Answer: C

   Explanation: Ohio requires a neck strip or clean towel when a reused cape would otherwise touch the patron. Source wording: "If a cape is reused, a licensee or boutique services registration holder shall use a neck strip, or a clean towel to".

   Reference: Rule 4713-15-05 - Ohio Administrative Code | Ohio Laws — O.A.C. 4713-15-05

7. 7Which epidermal portion defines the deepest level an Ohio cosmetologist may exfoliate?

   1. A. Stratum basale
   2. B. Stratum corneum
   3. C. Papillary dermis
   4. D. Reticular dermis

   Answer: B

   Explanation: Ohio limits cosmetologist exfoliation to stratum corneum cells only. Source wording: "Cosmetologists may exfoliate stratum corneum cells only.".

   Reference: Chapter 4713-8 - Ohio Administrative Code | Ohio Laws — O.A.C. 4713-8-03(E)

8. 8A reusable implement is contaminated with blood during an Ohio salon service. Which additional disinfectant registration is required beyond the ordinary nonporous-surface standard?

   1. A. Effective against influenza, measles, and chickenpox only
   2. B. Effective against tuberculosis, human immunodeficiency virus, and hepatitis B virus
   3. C. Effective against mold, mildew, and algae only
   4. D. Effective against bacterial spores and prions only

   Answer: B

   Explanation: For objects contacting blood or bodily fluids, Ohio requires a hospital-level disinfectant also registered as effective against mycobacterium tuberculosis, human immunodeficiency virus, and hepatitis B virus. Source wording: "hospital level disinfectant used to destroy or kill most bacteria, fungi, and viruses that is also registered as effective against mycobacterium tuberculosis".

   Reference: Chapter 4713-1 - Ohio Administrative Code | Ohio Laws — O.A.C. 4713-1-01(E)(2)

9. 9Which chemical does an NIH health source identify as one used in hair straighteners or relaxers?

   1. A. Ammonium thioglycolate
   2. B. Hydrogen peroxide only
   3. C. Ethyl acetate
   4. D. Dibutyl phthalate

   Answer: A

   Explanation: The source distinguishes straightening chemicals from common bleaching and nail-product chemicals. Source wording: "Hair straighteners (relaxers) use a variety of chemicals such as ammonium thioglycolate".

   Reference: Hair Treatments - MotherToBaby | Fact Sheets - NCBI Bookshelf — Hair Treatments fact sheet, What are the different types of hair treatments?

10. 10Besides cleaning and disinfection, how must an Ohio salon maintain a pedicure unit?

    1. A. Refill it with disinfectant after each month
    2. B. Flush and maintain it as the manufacturer recommends
    3. C. Store it dry for forty-eight hours after use
    4. D. Replace every removable part every week

    Answer: B

    Explanation: The rule requires pedicure equipment to be flushed and maintained as recommended by its manufacturer. Source wording: "Such equipment shall also be flushed and maintained as recommended by its manufacturer".

    Reference: Chapter 4713-15 - Ohio Administrative Code | Ohio Laws — O.A.C. 4713-15-15(B)