332A Hair Colouring Theory and Application

Question 1

What are the three primary colours in hair colour theory?

Accepted Answer

Red, blue, yellow

Answer

Red, orange, yellow

Answer

Red, green, blue

Answer

Blue, orange, violet

Question 2

What is the purpose of a developer (hydrogen peroxide) in permanent hair colour?

Accepted Answer

To open the cuticle and activate the oxidation process that develops colour

Answer

To condition the hair after colouring

Answer

To remove all natural pigment

Answer

To close the cuticle after processing

Question 3

What volume of developer is most commonly used for standard grey coverage with permanent colour?

Accepted Answer

20 volume (6%)

Answer

10 volume (3%)

Answer

30 volume (9%)

Answer

40 volume (12%)

Question 4

What does the 'level' system in hair colour refer to?

Accepted Answer

The degree of lightness or darkness of a colour

Answer

The intensity of the tone

Answer

The type of developer used

Answer

The percentage of grey coverage

Question 5

What are contributing pigments (also called undertones)?

Accepted Answer

The natural warm pigments revealed when hair is lightened

Answer

Pigments added by the colourist during application

Answer

The cool tones in permanent hair colour

Answer

Pigments found only in artificial hair colour

Question 6

What is a patch test and when should it be performed?

Accepted Answer

A skin allergy test done 24-48 hours before a colour service to check for adverse reactions

Answer

A test of the colour on a hair swatch, done during application

Answer

A test to check hair porosity, done at the shampoo bowl

Answer

A test of the developer strength, done at the mixing station