Cosmetology Cheat Sheet 2026

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

1. An EPA-registered disinfectant labeled as 'hospital-grade' must be effective against: → Bacteria, fungi, and viruses including HIV and HBV
2. A cosmetologist who shares client personal information without consent may violate: → Client confidentiality and privacy regulations
3. Practicing cosmetology without a valid license is considered: → Illegal and can result in fines and penalties
4. Bloodborne pathogens such as HIV and HBV are transmitted in the salon primarily through: → Contact with contaminated blood via cuts or sharps injuries
5. What is the scope of practice for a licensed cosmetologist in the US? → Hair, skin, and nail services within the limits defined by state law
6. When lightening hair that was previously colored with permanent color, what step is typically required before recoloring? → Color removal or stripping
7. What ingredient in a sunscreen physically blocks UV rays by sitting on top of the skin? → Zinc oxide
8. A salon suite operator (independent contractor) is responsible for: → Maintaining their own valid license and complying with all state board regulations
9. If a cosmetologist accidentally cuts a client and blood is present, the FIRST step is to: → Stop the service, put on gloves, and apply pressure/bandage
10. What is the term for the natural fall of the hair from its root, determined by the follicle angle? → Natural fall
11. The Fitzpatrick scale classifies skin by: → Response to UV exposure and skin tone
12. What is the correct nail cutting direction for toenails to help prevent ingrown nails? → Straight across
13. Which type of nail enhancement uses UV or LED light to harden (polymerize) the product? → Gel nail system
14. Onychomycosis is the technical term for: → Fungal infection of the nail
15. What type of mask is most beneficial for dry, dehydrated skin? → Hydrating cream or sheet mask
16. A virgin relaxer application is applied from which area first? → Crown to nape, then sides and front
17. Bleach (lightener) works by dissolving the hair's natural melanin through which process? → Oxidation
18. Complementary colors on the color wheel are colors that are: → Directly opposite each other on the color wheel
19. A one-length haircut is created by cutting all hair to the same length at: → 0-degree elevation
20. What is the developer's role in permanent haircolor chemistry? → Oxidize the color molecules and lighten the hair
21. When filing nails, the correct technique is to file in which direction? → In one direction from corner to center
22. What is the purpose of applying a nail primer before acrylic or gel nail enhancement? → Improve adhesion between the natural nail and the enhancement product
23. What does the term 'free edge' refer to in nail anatomy? → The portion of the nail plate that extends beyond the fingertip
24. Which of the following is the correct way to store disinfected implements? → In a closed, clean, labeled container or cabinet
25. What does the term 'double-process color' refer to? → Lightening the hair first, then applying a toner
26. A contraindication for performing a facial service includes: → Open wounds or active skin infections
27. Single-use (disposable) items like nail files and buffers must be: → Discarded after each client use
28. What is the white half-moon shape at the base of the nail called? → Lunula
29. What is the primary role of the state board of cosmetology? → Regulate and enforce laws governing the practice of cosmetology
30. Which government body issues cosmetology licenses and regulates the practice of cosmetology in each US state? → State board of cosmetology