Properties of the Hair & Scalp

The 2 parts of a mature strand of human hair are:

• hair root and hair shaft

• hair root and cuticle

• hair follicle hair shaft

• hair bulb & hair length

Salt bonds can be broken by ____ solutions.

• strong acidic

• strong alkaline

• both

• neither

Unique protein structures within the cortex are responsible for the color & ___ of the hair.

• texture

• length

• elasticity

• shine

A suggests that bald men are perceived as:

• Older

• more personally likable

• overly assertive

• more successful

Which layer of hair provides a barrier that protects the inner structure of hair?

• hair root

• hair cuticle

• medulla

• cortex

Which type of side bond can be broken by water or heat?

• hydrogen

• salt

• disulfide

• cortex

Proteins are made of long chains of:

• Canities

• amino acids

• helices

• elements

Thio neutralizers are used to reform ____ bonds.

• disulfide

• salt

• hydrogen

• peptide

The scientific study of hair and its diseases and care is called:

• Physiology

• trichology

• cosmetology

• dermatology

Generally, only which type of hair contains a medulla?

• naturally blond hair

• thick, coarse hair

• naturally brown hair

• very fine hair