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Colouring/lightening
Theory Knowledge
Question | Answer |
---|---|
Which colouring products no not require a skin test | temporary/semi permanent |
What chemical product contain nitro/para dyes which will require a skin test prior to colour application. | Semi permanent colour |
What is hair natural pigment called for warm tones | Pheomelainin |
What does ICC mean | International colour chart |
The principles of the colour star when colouring is what? | neutralise colour |
How many times will high lift products lift the hair | 4 to 5 shades |
The cool natural colours of the hair are known as what | Eumelanin |
High levels of pheomelainin are found in what natural hair colour | light hair |
Blue red yellow are known as what? | primary |
One of the main legislations that we should abide bye when colouring | COSHH |
if you suspect that the clients hair might have metallic salts what test would we carryout | Incompatibility |
what is another name for developer | peroxide |
What is the ph level for hair | 4.5-5.5 |