Cosmetology Test Scientific Concepts 3

Question 1

What happens to the hair cuticle when exposed to an alkaline solution?

Accepted Answer

It swells and opens

Answer

Alkaline solutions cause the cuticle scales to swell and lift, making the hair more porous and susceptible to damage.

Question 2

Which type of electricity flows in one direction only and is used in galvanic current treatments?

Accepted Answer

Direct current (DC)

Answer

Direct current flows in one continuous direction and is used in galvanic machines to introduce water-soluble substances into the skin.

Question 3

What is the scientific term for the outermost layer of the skin?

Accepted Answer

Epidermis

Answer

The epidermis is the outermost protective layer of the skin, composed of five sublayers including the stratum corneum.

Question 4

A client's hair has low porosity. What does this indicate about the cuticle?

Accepted Answer

The cuticle is tightly closed and resists moisture

Answer

Low porosity hair has a tightly sealed cuticle layer that resists water and chemical absorption.

Question 5

What is the name of the protein that makes up approximately 90% of the hair shaft?

Accepted Answer

Keratin

Answer

Keratin is the fibrous structural protein that composes the majority of hair, nails, and the outer skin layer.

Cosmetology Test Practice Test