1
NJ State Board Prometric
Written Exam 2024/2025 –
100% Correct Cosmetology
Questions and Answers
Hair Care and Services (Questions 1–15)
1. What is the primary purpose of a scalp analysis before a hair service?
A. Determine hair color
B. Identify scalp conditions and hair health
C. Check hair length
D. Assess client allergies
o Rationale: A scalp analysis identifies conditions like dandruff or irritation to
ensure safe service.
2. Which shampoo is best for oily hair?
A. Moisturizing shampoo
B. Clarifying shampoo
C. Color-safe shampoo
D. Conditioning shampoo
o Rationale: Clarifying shampoo removes excess oil and buildup effectively.
3. What is the main ingredient in permanent hair color?
A. Hydrogen peroxide
B. Ammonia
C. Glycerin
D. Keratin
o Rationale: Ammonia opens the hair cuticle to allow color penetration.
4. What is the correct angle for a blunt haircut?
A. 45 degrees
B. 0 degrees
C. 90 degrees
D. 180 degrees
o Rationale: A 0-degree angle creates a straight, even cut with no layers.
5. Which tool is used to create precise lines in a haircut?
A. Shears
B. Clippers
, 2
C. Thinning shears
D. Razor
o Rationale: Clippers provide clean, precise lines for short styles.
6. What is the purpose of a neutralizer in a perm?
A. Softens hair
B. Reforms disulfide bonds
C. Opens cuticle
D. Adds moisture
o Rationale: Neutralizer reforms bonds to set the new curl pattern.
7. What should you do if a client has an allergic reaction during a chemical service?
A. Continue the service
B. Stop immediately and rinse with water
C. Apply more product
D. Wait 10 minutes
o Rationale: Stopping and rinsing prevents further irritation or harm.
8. What is the main cause of hair breakage during chemical processing?
A. Overprocessing
B. Using excessive heat
C. Incorrect shampoo
D. Poor combing technique
o Rationale: Excessive heat weakens hair structure during chemical services.
9. Which hair type is most resistant to chemical services?
A. Fine hair
B. Coarse hair
C. Medium hair
D. Damaged hair
o Rationale: Coarse hair’s dense structure resists chemical penetration.
10. What is the pH range of a typical permanent wave solution?
A. 2.5–4.5
B. 6.5–9.5
C. 4.5–6.5
D. 9.5–11.5
o Rationale: Permanent wave solutions are alkaline to break disulfide bonds.
11. How often should thermal styling tools be cleaned?
A. Monthly
B. After each use
C. Weekly
D. Daily
o Rationale: Cleaning after each use prevents buildup and cross-contamination.
12. What is the purpose of a strand test in hair coloring?
A. Check hair length
B. Determine processing time and color result
C. Assess scalp sensitivity
D. Measure hair density
o Rationale: A strand test ensures the desired color and prevents overprocessing.
NJ State Board Prometric
Written Exam 2024/2025 –
100% Correct Cosmetology
Questions and Answers
Hair Care and Services (Questions 1–15)
1. What is the primary purpose of a scalp analysis before a hair service?
A. Determine hair color
B. Identify scalp conditions and hair health
C. Check hair length
D. Assess client allergies
o Rationale: A scalp analysis identifies conditions like dandruff or irritation to
ensure safe service.
2. Which shampoo is best for oily hair?
A. Moisturizing shampoo
B. Clarifying shampoo
C. Color-safe shampoo
D. Conditioning shampoo
o Rationale: Clarifying shampoo removes excess oil and buildup effectively.
3. What is the main ingredient in permanent hair color?
A. Hydrogen peroxide
B. Ammonia
C. Glycerin
D. Keratin
o Rationale: Ammonia opens the hair cuticle to allow color penetration.
4. What is the correct angle for a blunt haircut?
A. 45 degrees
B. 0 degrees
C. 90 degrees
D. 180 degrees
o Rationale: A 0-degree angle creates a straight, even cut with no layers.
5. Which tool is used to create precise lines in a haircut?
A. Shears
B. Clippers
, 2
C. Thinning shears
D. Razor
o Rationale: Clippers provide clean, precise lines for short styles.
6. What is the purpose of a neutralizer in a perm?
A. Softens hair
B. Reforms disulfide bonds
C. Opens cuticle
D. Adds moisture
o Rationale: Neutralizer reforms bonds to set the new curl pattern.
7. What should you do if a client has an allergic reaction during a chemical service?
A. Continue the service
B. Stop immediately and rinse with water
C. Apply more product
D. Wait 10 minutes
o Rationale: Stopping and rinsing prevents further irritation or harm.
8. What is the main cause of hair breakage during chemical processing?
A. Overprocessing
B. Using excessive heat
C. Incorrect shampoo
D. Poor combing technique
o Rationale: Excessive heat weakens hair structure during chemical services.
9. Which hair type is most resistant to chemical services?
A. Fine hair
B. Coarse hair
C. Medium hair
D. Damaged hair
o Rationale: Coarse hair’s dense structure resists chemical penetration.
10. What is the pH range of a typical permanent wave solution?
A. 2.5–4.5
B. 6.5–9.5
C. 4.5–6.5
D. 9.5–11.5
o Rationale: Permanent wave solutions are alkaline to break disulfide bonds.
11. How often should thermal styling tools be cleaned?
A. Monthly
B. After each use
C. Weekly
D. Daily
o Rationale: Cleaning after each use prevents buildup and cross-contamination.
12. What is the purpose of a strand test in hair coloring?
A. Check hair length
B. Determine processing time and color result
C. Assess scalp sensitivity
D. Measure hair density
o Rationale: A strand test ensures the desired color and prevents overprocessing.
