GUAM ESTHETICIAN EXAM QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) Q&A
2026 |INSTANT DOWNLOAD PDF
1. What is the primary function of the stratum corneum?
A. Produce melanin
B. Provide skin elasticity
C. Act as a protective barrier
D. Produce sebum
Rationale: The stratum corneum is the outermost layer of the
epidermis that protects against pathogens, chemicals, and
water loss.
Correct Answer: C
2. Which bacterium is commonly associated with acne
formation?
A. Staphylococcus aureus
B. Propionibacterium acnes
C. Streptococcus pyogenes
D. Candida albicans
Rationale: Acne is primarily linked to Cutibacterium
(Propionibacterium) acnes, which thrives in clogged follicles.
Correct Answer: B
,3. What is the correct order of skin layers from outermost to
innermost?
A. Dermis → Epidermis → Subcutaneous
B. Epidermis → Dermis → Subcutaneous
C. Subcutaneous → Dermis → Epidermis
D. Dermis → Subcutaneous → Epidermis
Rationale: The epidermis is outermost, followed by dermis,
then subcutaneous tissue.
Correct Answer: B
4. What is the purpose of disinfectants in a salon setting?
A. To kill all microbial life including spores
B. To reduce bacteria on non-living surfaces
C. To sterilize surgical instruments
D. To moisturize tools
Rationale: Disinfectants reduce most pathogenic
microorganisms on surfaces but do not sterilize.
Correct Answer: B
5. Which layer of the skin contains sebaceous glands?
A. Epidermis
B. Dermis
,C. Stratum lucidum
D. Subcutaneous layer
Rationale: Sebaceous glands are located in the dermis and
produce sebum.
Correct Answer: B
6. What is the pH of healthy skin?
A. 1.0–3.0
B. 4.5–5.5
C. 7.0–8.0
D. 9.0–10.0
Rationale: Healthy skin is slightly acidic, which helps maintain
barrier function.
Correct Answer: B
7. What does SPF in sunscreen stand for?
A. Skin Protection Factor
B. Sun Power Formula
C. Sun Protection Factor
D. Solar Prevention Filter
Rationale: SPF measures protection against UVB radiation.
Correct Answer: C
, 8. Which condition is characterized by excessive sebum
production and clogged pores?
A. Albinism
B. Oily skin
C. Rosacea
D. Eczema
Rationale: Oily skin results from overactive sebaceous glands
and clogged follicles.
Correct Answer: B
9. What is the main purpose of exfoliation?
A. Increase melanin production
B. Remove dead skin cells
C. Increase oil production
D. Tighten facial muscles
Rationale: Exfoliation removes dead cells from the stratum
corneum.
Correct Answer: B
10. Which infection control practice prevents cross-
contamination?
A. Reusing disposable tools
B. Double-dipping wax applicators
CORRECT ANSWERS (VERIFIED ANSWERS) Q&A
2026 |INSTANT DOWNLOAD PDF
1. What is the primary function of the stratum corneum?
A. Produce melanin
B. Provide skin elasticity
C. Act as a protective barrier
D. Produce sebum
Rationale: The stratum corneum is the outermost layer of the
epidermis that protects against pathogens, chemicals, and
water loss.
Correct Answer: C
2. Which bacterium is commonly associated with acne
formation?
A. Staphylococcus aureus
B. Propionibacterium acnes
C. Streptococcus pyogenes
D. Candida albicans
Rationale: Acne is primarily linked to Cutibacterium
(Propionibacterium) acnes, which thrives in clogged follicles.
Correct Answer: B
,3. What is the correct order of skin layers from outermost to
innermost?
A. Dermis → Epidermis → Subcutaneous
B. Epidermis → Dermis → Subcutaneous
C. Subcutaneous → Dermis → Epidermis
D. Dermis → Subcutaneous → Epidermis
Rationale: The epidermis is outermost, followed by dermis,
then subcutaneous tissue.
Correct Answer: B
4. What is the purpose of disinfectants in a salon setting?
A. To kill all microbial life including spores
B. To reduce bacteria on non-living surfaces
C. To sterilize surgical instruments
D. To moisturize tools
Rationale: Disinfectants reduce most pathogenic
microorganisms on surfaces but do not sterilize.
Correct Answer: B
5. Which layer of the skin contains sebaceous glands?
A. Epidermis
B. Dermis
,C. Stratum lucidum
D. Subcutaneous layer
Rationale: Sebaceous glands are located in the dermis and
produce sebum.
Correct Answer: B
6. What is the pH of healthy skin?
A. 1.0–3.0
B. 4.5–5.5
C. 7.0–8.0
D. 9.0–10.0
Rationale: Healthy skin is slightly acidic, which helps maintain
barrier function.
Correct Answer: B
7. What does SPF in sunscreen stand for?
A. Skin Protection Factor
B. Sun Power Formula
C. Sun Protection Factor
D. Solar Prevention Filter
Rationale: SPF measures protection against UVB radiation.
Correct Answer: C
, 8. Which condition is characterized by excessive sebum
production and clogged pores?
A. Albinism
B. Oily skin
C. Rosacea
D. Eczema
Rationale: Oily skin results from overactive sebaceous glands
and clogged follicles.
Correct Answer: B
9. What is the main purpose of exfoliation?
A. Increase melanin production
B. Remove dead skin cells
C. Increase oil production
D. Tighten facial muscles
Rationale: Exfoliation removes dead cells from the stratum
corneum.
Correct Answer: B
10. Which infection control practice prevents cross-
contamination?
A. Reusing disposable tools
B. Double-dipping wax applicators
