Cosmetology and Beauty Cosmetology and Beauty Skin Care & Esthetics 1 — Questions and Answers
Question 1: Which layer of the skin is responsible for producing new skin cells through mitosis?
- Stratum corneum
- Stratum granulosum
- Stratum basale (germinativum) (Correct answer)
- Stratum spinosum
Correct answer: Stratum basale (germinativum)
The stratum basale is the deepest epidermal layer where stem cells continuously divide to produce new keratinocytes.
Question 2: What is the Fitzpatrick scale used for in esthetics?
- Measuring skin hydration levels
- Classifying skin type by its reaction to UV exposure (Correct answer)
- Grading severity of acne lesions
- Assessing skin elasticity
Correct answer: Classifying skin type by its reaction to UV exposure
The Fitzpatrick scale classifies skin into six types (I–VI) based on its tendency to burn or tan when exposed to ultraviolet radiation.
Question 3: Which type of facial exfoliation uses enzymes to dissolve dead skin cells?
- Microdermabrasion
- Mechanical scrub exfoliation
- Chemical AHA peel
- Enzyme exfoliation (Correct answer)
Correct answer: Enzyme exfoliation
Enzyme exfoliants use proteolytic enzymes (often from papaya or pineapple) to digest the keratin protein in dead skin cells without abrasion.
Question 4: What does SPF (Sun Protection Factor) measure?
- The amount of UVA radiation blocked by a sunscreen
- How long sunscreen extends the time before UVB rays cause sunburn (Correct answer)
- The concentration of zinc oxide in a sunscreen formula
- The water resistance of a sunscreen product
Correct answer: How long sunscreen extends the time before UVB rays cause sunburn
SPF indicates how much longer skin protected by sunscreen takes to show UVB-induced sunburn compared to unprotected skin.
Question 5: Which skin condition is characterized by chronic redness, flushing, visible blood vessels, and pustules on the central face?
- Psoriasis
- Seborrheic dermatitis
- Rosacea (Correct answer)
- Contact dermatitis
Correct answer: Rosacea
Rosacea is a chronic inflammatory condition presenting with persistent facial redness, telangiectasia, and sometimes acne-like pustules.
Question 6: What is the primary function of sebum secreted by the sebaceous glands?
- Regulate body temperature
- Lubricate and protect the skin and hair from moisture loss (Correct answer)
- Produce melanin for skin pigmentation
- Transport oxygen to skin cells
Correct answer: Lubricate and protect the skin and hair from moisture loss
Sebum is a lipid-rich secretion that coats the skin surface and hair shaft to prevent transepidermal water loss and protect against environmental damage.
Cosmetology and Beauty Cosmetology and Beauty Skin Care & Esthetics 1
Which layer of the skin is responsible for producing new skin cells through mitosis?