Cosmetology Hair Coloring and Color Theory 2

Question 1

Which type of hair color only coats the outside of the hair shaft and typically fades within 4–6 shampoos?

Accepted Answer

Temporary color

Answer

Temporary color rests on the surface of the hair cuticle without penetrating the cortex and washes out after a few shampoos.

Question 2

How does permanent hair color deposit color into the hair?

Accepted Answer

It opens the cuticle and deposits color into the cortex

Answer

Permanent hair color uses an alkaline agent to swell and open the cuticle, allowing oxidative dye molecules to penetrate and develop color in the cortex.

Question 3

What developer strength (volume) is most commonly used when applying permanent color to cover gray hair?

Accepted Answer

20 volume

Answer

20-volume developer is the standard choice for covering gray hair, providing enough lift and oxidation to deposit color without excessive lightening.

Question 4

A double-process color service involves which two steps?

Accepted Answer

Pre-lightening the hair and then applying toner or haircolor

Answer

A double-process service first lightens the hair (pre-lightening), then applies a toner or haircolor to achieve the desired shade.

Question 5

Demi-permanent (deposit-only) color differs from permanent color primarily because it uses:

Accepted Answer

A very low-volume hydrogen peroxide developer

Answer

Demi-permanent color uses a low-volume (5–10) hydrogen peroxide developer instead of the stronger developer in permanent color, so it deposits without significant lift.

Cosmetology Practice Test

Cosmetology Practice Test

Cosmetology Hair Coloring and Color Theory 2