Cosmetology Test Cheat Sheet 2026

The 30 highest-yield Cosmetology Test facts, distilled from real exam questions. Print it, save it as a PDF, or study it here — free, no sign-up.

1. Which layer of the skin contains blood vessels, nerves, sweat glands, and oil glands? → Dermis
2. Before recommending hair extensions, which factor is MOST important for a cosmetologist to assess? → Natural hair health and strength
3. An EPA-registered disinfectant must be used in a salon to clean which of the following? → Nonporous tools and implements
4. Which part of the nail unit contains the nerves, lymph, and blood vessels and is responsible for producing the cells that form the nail plate? → Nail Matrix
5. A common usage for dibutyl phthalate is as a _______. → Plasticizer
6. What does electrical grounding provide in salon electrical safety? → A safe path for excess electrical current to discharge into the earth
7. What precautions should be taken during a relaxer treatment to safeguard a delicate scalp? → Apply a protective base.
8. What type of electrode is used with a high-frequency machine for direct surface application to the skin? → Glass electrode filled with gas
9. The OSHA Bloodborne Pathogens Standard was established in what year? → 2001
10. When shaping the free edge of a natural nail during a manicure, which of the following filing techniques is recommended to prevent splitting and damage? → Filing from the outer corner to the center of the free edge.
11. What is the purpose of a salon's 'ticket average' metric? → To calculate the average dollar amount spent per client visit
12. Which product should be used when professionally removing keratin/fusion bond extensions? → Bond remover solution
13. Which of the following is the active growth phase of the hair growth cycle, during which new hair is produced? → Anagen
14. Which hair extension method uses a keratin adhesive applied with a heat tool to attach individual strands near the root? → Keratin/fusion bonding
15. What could the hair become if it is frequently shampooed with a very alkaline shampoo? → Dry
16. Which part of the nail unit contains the nerves, lymph, and blood vessels, and is responsible for producing the cells that form the nail plate? → Matrix
17. What does 'commission' mean as a salon compensation structure? → A percentage of the revenue generated from services performed
18. Which pricing strategy sets service prices based on the cost of supplies plus a desired profit margin? → Cost-plus pricing
19. The following are dangerous substances that cosmetologists avoid using → Flavour
20. What is the main reason cosmetologists should maintain a professional portfolio? → To showcase their skills and attract new clients or employers
21. In cosmetology, galvanic current is primarily used for which two facial services? → Iontophoresis and desincrustation
22. How often is it necessary to take continuing education courses? → every two years
23. What is the FIRST step a cosmetologist should take before fitting a client with a wig? → Measure the client's head
24. What is the correct way to store a wig when it is not being worn? → On a wig stand or mannequin head
25. Which type of light therapy produces heat that penetrates the skin to increase circulation and relieve muscle tension? → Infrared light
26. During a scalp treatment, a cosmetologist massages the muscle that covers the top of the skull. What is the name of this muscle? → Occipitofrontalis
27. Jessica is giving herself a haircut. When she glances down, she sees that this finger is in charge of her shears' motionless blade. What finger is it on? → Ring finger
28. What tendencies does the hair exhibit as it is being chemically waved? → To expand
29. Where do blood vessels and nerves reside? → Nail bed
30. Which form must a new salon employee complete so the employer can withhold the correct federal income tax? → W-4