Cosmetology Test Principles of Skin Care 4 — Questions and Answers
Question 1: Which acid is classified as an alpha hydroxy acid (AHA) and is commonly derived from milk?
- Salicylic acid
- Lactic acid (Correct answer)
- Glycolic acid
- Azelaic acid
Correct answer: Lactic acid
Lactic acid is an AHA naturally found in milk; it exfoliates the skin surface and is gentler than glycolic acid, making it suitable for sensitive skin.
Question 2: Salicylic acid is classified as a beta hydroxy acid (BHA) and is especially effective for which skin concern?
- Hyperpigmentation
- Dehydration
- Acne and clogged pores (Correct answer)
- Fine lines and wrinkles
Correct answer: Acne and clogged pores
Salicylic acid is oil-soluble, allowing it to penetrate pores and dissolve sebum and debris, making it particularly effective for treating acne and blackheads.
Question 3: What is the purpose of a toner in a basic skin care routine?
- To remove makeup
- To rebalance skin pH and remove residual cleanser (Correct answer)
- To provide heavy moisturization
- To apply SPF protection
Correct answer: To rebalance skin pH and remove residual cleanser
Toners help restore the skin's natural pH after cleansing and remove any remaining traces of cleanser, preparing the skin for subsequent treatments.
Question 4: Which of the following best describes combination skin?
- Uniform oiliness across the entire face
- Oily T-zone with dry or normal cheeks (Correct answer)
- Consistently dry across all areas
- Highly sensitive to all products
Correct answer: Oily T-zone with dry or normal cheeks
Combination skin features an oily T-zone (forehead, nose, and chin) with drier or normal skin on the cheeks and other areas.
Question 5: What is hyperpigmentation?
- A lack of melanin causing light patches
- Excess melanin production causing dark spots or patches (Correct answer)
- Redness caused by inflammation
- Loss of skin elasticity
Correct answer: Excess melanin production causing dark spots or patches
Hyperpigmentation occurs when excess melanin is produced, resulting in dark spots, melasma, or uneven skin tone due to sun exposure, hormones, or inflammation.
Question 6: Which type of ultraviolet radiation is primarily responsible for premature skin aging (photoaging)?
- UVC rays
- UVB rays
- UVA rays (Correct answer)
- Infrared rays
Correct answer: UVA rays
UVA rays penetrate deeply into the dermis and are the primary cause of photoaging, breaking down collagen and elastin and contributing to wrinkles and sagging.
Question 7: A client complains of sudden redness, swelling, and itching after applying a new product. This reaction is most likely:
- Comedogenic reaction
- Contact dermatitis (Correct answer)
- Hyperpigmentation
- Milia formation
Correct answer: Contact dermatitis
Contact dermatitis is an inflammatory skin reaction triggered by direct contact with an allergen or irritant, presenting as redness, swelling, and itching.
Cosmetology Test Principles of Skin Care 4
Which acid is classified as an alpha hydroxy acid (AHA) and is commonly derived from milk?