Cosmetology Test Hair & Scalp Properties 4 — Questions and Answers
Question 1: What is the name for hair loss that follows the typical pattern of receding hairline and thinning crown in men?
- Alopecia areata
- Androgenetic alopecia (Correct answer)
- Traction alopecia
- Telogen effluvium
Correct answer: Androgenetic alopecia
Androgenetic alopecia (male-pattern baldness) is caused by a genetic sensitivity to dihydrotestosterone (DHT) and follows predictable hair loss patterns.
Question 2: A vellus hair is best described as:
- A thick, pigmented terminal hair
- A fine, soft, unpigmented hair covering most of the body (Correct answer)
- A hair that has been chemically processed
- A hair in the telogen phase only
Correct answer: A fine, soft, unpigmented hair covering most of the body
Vellus hair is the fine, soft, short, and usually unpigmented hair that covers most of the human body.
Question 3: What does high porosity in hair indicate?
- The hair cuticle is tightly closed and resistant to moisture
- The hair cuticle is raised or damaged and absorbs moisture quickly (Correct answer)
- The hair has a high density of follicles
- The hair shaft is larger in diameter
Correct answer: The hair cuticle is raised or damaged and absorbs moisture quickly
High porosity means the cuticle layer is open or damaged, causing hair to quickly absorb moisture but also lose it rapidly.
Question 4: The hydrogen bonds in hair are broken by which of the following?
- Chemical relaxers
- Water and heat (Correct answer)
- Permanent wave solution
- Hair dye
Correct answer: Water and heat
Hydrogen bonds are weak physical bonds easily broken by water or heat, which is why wet setting and thermal styling temporarily change hair shape.
Question 5: Tinea capitis is a scalp condition caused by:
- A bacterial infection
- A fungal infection (Correct answer)
- A viral infection
- A hormonal imbalance
Correct answer: A fungal infection
Tinea capitis, commonly called ringworm of the scalp, is a fungal infection and is contagious.
Question 6: Which type of hair bond is the strongest and most difficult to break?
- Hydrogen bond
- Salt bond
- Disulfide bond (Correct answer)
- Van der Waals bond
Correct answer: Disulfide bond
Disulfide bonds are covalent bonds that are the strongest bonds in hair and can only be broken by chemical processes such as perms or relaxers.
Question 7: What is the term for the number of individual hair strands per square inch on the scalp?
- Texture
- Porosity
- Density (Correct answer)
- Elasticity
Correct answer: Density
Hair density refers to the number of hair strands per square inch and is classified as thin, medium, or thick.
Cosmetology Test Hair & Scalp Properties 4
What is the name for hair loss that follows the typical pattern of receding hairline and thinning crown in men?