FLORIDA COSMETOLOGY CLINICAL
EXAM 2027 QUESTIONS AND ANSWERS
1. During a permanent wave service, what occurs during the reduction reaction?
A. Oxygen is added to the hair shaft
B. The hair is hardened by the neutralizer
C. Hydrogen is added to the disulfide bonds
D. Salt bonds are permanently broken
Answer: C
Conceptual Explanation: In permanent waving, the reduction reaction involves the
addition of hydrogen to the disulfide bonds, which breaks the bonds and allows the hair to
be reshaped.
2. Which of the following is the most common reducing agent in permanent wave solutions?
A. Hydrogen peroxide
B. Sodium hydroxide
C. Ammonia
,D. Thioglycolic acid
Answer: D
Conceptual Explanation: Thioglycolic acid is the most common reducing agent used in
permanent waving to break disulfide bonds.
3. What is the pH range of a typical alkaline permanent wave solution?
A. 4.5 to 5.5
B. 9.0 to 9.6
C. 7.0 to 8.0
D. 12.5 to 13.5
Answer: B
Conceptual Explanation: Alkaline or cold waves usually have a pH between 9.0 and 9.6,
utilizing ammonium thioglycolate.
4. Which layer of the hair must the color or chemical solution penetrate to be effective?
A. Cortex
B. Cuticle
C. Medulla
D. Follicle
Answer: A
, Conceptual Explanation: The cortex is the middle layer of the hair and contains the
melanin and the bonds that are altered during chemical services.
5. When using a chemical relaxer, what is the process of breaking disulfide bonds and
converting them to lanthionine bonds called?
A. Oxidation
B. Reduction
C. Lanthionization
D. Polymerization
Answer: C
Conceptual Explanation: Lanthionization is the process by which hydroxide relaxers
permanently straighten hair by removing one atom of sulfur from a disulfide bond.
6. What is the primary purpose of a ‘patch test’ before a hair color service?
A. To check for an allergic reaction to aniline derivatives
B. To see if the client likes the color
C. To determine the hair’s porosity
D. To check the processing time
Answer: A
Conceptual Explanation: A patch test, also known as a predisposition test, identifies
sensitivities to the aniline derivatives found in permanent hair colors.
EXAM 2027 QUESTIONS AND ANSWERS
1. During a permanent wave service, what occurs during the reduction reaction?
A. Oxygen is added to the hair shaft
B. The hair is hardened by the neutralizer
C. Hydrogen is added to the disulfide bonds
D. Salt bonds are permanently broken
Answer: C
Conceptual Explanation: In permanent waving, the reduction reaction involves the
addition of hydrogen to the disulfide bonds, which breaks the bonds and allows the hair to
be reshaped.
2. Which of the following is the most common reducing agent in permanent wave solutions?
A. Hydrogen peroxide
B. Sodium hydroxide
C. Ammonia
,D. Thioglycolic acid
Answer: D
Conceptual Explanation: Thioglycolic acid is the most common reducing agent used in
permanent waving to break disulfide bonds.
3. What is the pH range of a typical alkaline permanent wave solution?
A. 4.5 to 5.5
B. 9.0 to 9.6
C. 7.0 to 8.0
D. 12.5 to 13.5
Answer: B
Conceptual Explanation: Alkaline or cold waves usually have a pH between 9.0 and 9.6,
utilizing ammonium thioglycolate.
4. Which layer of the hair must the color or chemical solution penetrate to be effective?
A. Cortex
B. Cuticle
C. Medulla
D. Follicle
Answer: A
, Conceptual Explanation: The cortex is the middle layer of the hair and contains the
melanin and the bonds that are altered during chemical services.
5. When using a chemical relaxer, what is the process of breaking disulfide bonds and
converting them to lanthionine bonds called?
A. Oxidation
B. Reduction
C. Lanthionization
D. Polymerization
Answer: C
Conceptual Explanation: Lanthionization is the process by which hydroxide relaxers
permanently straighten hair by removing one atom of sulfur from a disulfide bond.
6. What is the primary purpose of a ‘patch test’ before a hair color service?
A. To check for an allergic reaction to aniline derivatives
B. To see if the client likes the color
C. To determine the hair’s porosity
D. To check the processing time
Answer: A
Conceptual Explanation: A patch test, also known as a predisposition test, identifies
sensitivities to the aniline derivatives found in permanent hair colors.
