California Cosmetology Examination with
Practice Questions And Correct Answers
(Verified
1. Which statement correctly distinguishes disinfection from sterilization in a
California salon setting?
A. Disinfection eliminates all microbial life including bacterial spores, whereas
sterilization only reduces pathogenic load.
B. Sterilization destroys all microbial life including spores, while disinfection reduces
pathogens on inanimate surfaces but does not necessarily eliminate spores.
C. Disinfection and sterilization are legally interchangeable terms under Board
regulations for implements.
D. Sterilization is required for all non-porous implements, while disinfection is reserved
for porous items only.
Answer: B. Sterilization destroys all microbial life including spores, while disinfection
reduces pathogens on inanimate surfaces but does not necessarily eliminate spores.
Rationale: Sterilization destroys all microorganisms including spores, while disinfection
reduces pathogenic organisms on surfaces but may not eliminate spores. California
regulations require disinfection, not sterilization, for most salon implements. Options A and
C misstate the definitions, and D reverses the appropriate use categories.
Page 1 of 81
,2. A client requests a chemical relaxer on hair previously treated with a thio-based
permanent wave two weeks ago. What is the safest professional decision?
A. Proceed with a no-lye relaxer because the prior service was thio-based.
B. Proceed with a lye relaxer after a strand test.
C. Decline the service until the hair has sufficiently recovered and a strand test confirms
integrity.
D. Apply a relaxer followed immediately by a neutralizing shampoo to stop the reaction.
Answer: C. Decline the service until the hair has sufficiently recovered and a strand
test confirms integrity.
Rationale: Recent thio permanent wave and relaxer services both alter disulfide bonds, and
overlapping them risks severe breakage. A strand test and adequate recovery period are
required before any additional chemical processing. Options A and B disregard cumulative
bond disruption, and D cannot prevent damage once the relaxer is applied.
Page 2 of 81
,3. Which statement about the pH scale and hair structure is most accurate in chemical
service planning?
A. A pH of 7 is strongly alkaline and swells the hair cuticle.
B. Acidic solutions (pH below 7) contract the cuticle and are used in conditioning and
color after-treatment.
C. Alkaline solutions (pH above 7) close the cuticle and reduce chemical penetration.
D. The pH scale ranges from 0 to 10, with 5 being neutral.
Answer: B. Acidic solutions (pH below 7) contract the cuticle and are used in
conditioning and color after-treatment.
Rationale: Acidic solutions contract the cuticle, which is why acidic conditioners and
after-color treatments smooth and seal the hair. Alkaline solutions swell the cuticle and
increase penetration, not reduce it. The pH scale runs 0 to 14, so options A, C, and D are
incorrect.
4. Under California law, which requirement applies to the display of a cosmetology
license in a salon?
A. A photocopy may be kept in a drawer as long as it is available on request.
B. The license must be posted in plain view at the licensee's work station or in a
conspicuous public area.
C. Only the salon owner's license must be displayed; employee licenses are kept on file.
D. Display is optional if the licensee carries a digital copy on a mobile device.
Answer: B. The license must be posted in plain view at the licensee's work station or in
a conspicuous public area.
Rationale: California Board of Barbering and Cosmetology regulations require each
licensee to conspicuously post their license at their work station or in a public area.
Photocopies in drawers, owner-only displays, and digital-only copies do not satisfy the
posting requirement.
Page 3 of 81
, 5. Which layer of the hair shaft is primarily responsible for the hair's tensile strength
and elasticity?
A. Cuticle
B. Cortex
C. Medulla
D. Follicle
Answer: B. Cortex
Rationale: The cortex contains the disulfide, hydrogen, and salt bonds that give hair its
strength and elasticity. The cuticle protects the cortex, the medulla is an inner core with
little structural role, and the follicle is the skin structure that produces hair.
6. A cosmetologist notices a client has an inflamed, oozing lesion on the scalp before a
color service. What is the correct action?
A. Proceed with the color service but avoid the lesion area.
B. Apply a barrier cream and continue as planned.
C. Refer the client to a physician and do not perform the service.
D. Disinfect the area with alcohol and proceed.
Answer: C. Refer the client to a physician and do not perform the service.
Rationale: Inflammatory or oozing scalp lesions may indicate infection or another medical
condition and are contraindications for chemical services. California regulations and
scope-of-practice standards require referral to a physician rather than proceeding. Options
A, B, and D all risk aggravating the condition or spreading infection.
Page 4 of 81
Practice Questions And Correct Answers
(Verified
1. Which statement correctly distinguishes disinfection from sterilization in a
California salon setting?
A. Disinfection eliminates all microbial life including bacterial spores, whereas
sterilization only reduces pathogenic load.
B. Sterilization destroys all microbial life including spores, while disinfection reduces
pathogens on inanimate surfaces but does not necessarily eliminate spores.
C. Disinfection and sterilization are legally interchangeable terms under Board
regulations for implements.
D. Sterilization is required for all non-porous implements, while disinfection is reserved
for porous items only.
Answer: B. Sterilization destroys all microbial life including spores, while disinfection
reduces pathogens on inanimate surfaces but does not necessarily eliminate spores.
Rationale: Sterilization destroys all microorganisms including spores, while disinfection
reduces pathogenic organisms on surfaces but may not eliminate spores. California
regulations require disinfection, not sterilization, for most salon implements. Options A and
C misstate the definitions, and D reverses the appropriate use categories.
Page 1 of 81
,2. A client requests a chemical relaxer on hair previously treated with a thio-based
permanent wave two weeks ago. What is the safest professional decision?
A. Proceed with a no-lye relaxer because the prior service was thio-based.
B. Proceed with a lye relaxer after a strand test.
C. Decline the service until the hair has sufficiently recovered and a strand test confirms
integrity.
D. Apply a relaxer followed immediately by a neutralizing shampoo to stop the reaction.
Answer: C. Decline the service until the hair has sufficiently recovered and a strand
test confirms integrity.
Rationale: Recent thio permanent wave and relaxer services both alter disulfide bonds, and
overlapping them risks severe breakage. A strand test and adequate recovery period are
required before any additional chemical processing. Options A and B disregard cumulative
bond disruption, and D cannot prevent damage once the relaxer is applied.
Page 2 of 81
,3. Which statement about the pH scale and hair structure is most accurate in chemical
service planning?
A. A pH of 7 is strongly alkaline and swells the hair cuticle.
B. Acidic solutions (pH below 7) contract the cuticle and are used in conditioning and
color after-treatment.
C. Alkaline solutions (pH above 7) close the cuticle and reduce chemical penetration.
D. The pH scale ranges from 0 to 10, with 5 being neutral.
Answer: B. Acidic solutions (pH below 7) contract the cuticle and are used in
conditioning and color after-treatment.
Rationale: Acidic solutions contract the cuticle, which is why acidic conditioners and
after-color treatments smooth and seal the hair. Alkaline solutions swell the cuticle and
increase penetration, not reduce it. The pH scale runs 0 to 14, so options A, C, and D are
incorrect.
4. Under California law, which requirement applies to the display of a cosmetology
license in a salon?
A. A photocopy may be kept in a drawer as long as it is available on request.
B. The license must be posted in plain view at the licensee's work station or in a
conspicuous public area.
C. Only the salon owner's license must be displayed; employee licenses are kept on file.
D. Display is optional if the licensee carries a digital copy on a mobile device.
Answer: B. The license must be posted in plain view at the licensee's work station or in
a conspicuous public area.
Rationale: California Board of Barbering and Cosmetology regulations require each
licensee to conspicuously post their license at their work station or in a public area.
Photocopies in drawers, owner-only displays, and digital-only copies do not satisfy the
posting requirement.
Page 3 of 81
, 5. Which layer of the hair shaft is primarily responsible for the hair's tensile strength
and elasticity?
A. Cuticle
B. Cortex
C. Medulla
D. Follicle
Answer: B. Cortex
Rationale: The cortex contains the disulfide, hydrogen, and salt bonds that give hair its
strength and elasticity. The cuticle protects the cortex, the medulla is an inner core with
little structural role, and the follicle is the skin structure that produces hair.
6. A cosmetologist notices a client has an inflamed, oozing lesion on the scalp before a
color service. What is the correct action?
A. Proceed with the color service but avoid the lesion area.
B. Apply a barrier cream and continue as planned.
C. Refer the client to a physician and do not perform the service.
D. Disinfect the area with alcohol and proceed.
Answer: C. Refer the client to a physician and do not perform the service.
Rationale: Inflammatory or oozing scalp lesions may indicate infection or another medical
condition and are contraindications for chemical services. California regulations and
scope-of-practice standards require referral to a physician rather than proceeding. Options
A, B, and D all risk aggravating the condition or spreading infection.
Page 4 of 81
