CHS Hair Coloring & Chemical Treatments 2

Question 1

A client wants to go from level 4 dark brown to level 8 golden blonde. How many levels of lift are required?

Accepted Answer

4 levels

Answer

Moving from level 4 to level 8 requires lifting 4 levels, which typically requires a higher-volume developer or pre-lightening.

Question 2

Which of the following developers is used when the maximum lift is needed for a lightening service?

Accepted Answer

40 volume (12%)

Answer

40 volume developer provides the maximum lift of approximately 4-5 levels and is used for high-lift coloring services.

Question 3

What is the primary function of a toner applied after pre-lightening?

Accepted Answer

Deposit additional pigment and neutralize unwanted warm tones

Answer

Toners deposit tone and neutralize brassiness or unwanted warm undertones left after the lightening process.

Question 4

A patch test for hair color should be performed at minimum how long before a chemical service?

Accepted Answer

24–48 hours

Answer

A patch (predisposition) test must be performed 24–48 hours before the service to detect allergic reactions to oxidative dye ingredients.

Question 5

When performing a highlighting service, foil is used primarily to:

Accepted Answer

Isolate selected strands and contain the lightener

Answer

Foil isolates selected hair strands from the rest of the hair and contains the lightening product to prevent bleeding onto unwanted areas.

(CHS) Certified Hair Stylist Practice Test