CHS Hair Coloring & Chemical Treatments 2 — Questions and Answers
Question 1: A client wants to go from level 4 dark brown to level 8 golden blonde. How many levels of lift are required?
- 2 levels
- 4 levels (Correct answer)
- 6 levels
- 8 levels
Correct answer: 4 levels
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?
- 10 volume (3%)
- 20 volume (6%)
- 30 volume (9%)
- 40 volume (12%) (Correct answer)
Correct answer: 40 volume (12%)
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?
- Deposit additional pigment and neutralize unwanted warm tones (Correct answer)
- Condition and repair the hair cuticle
- Permanently lift remaining natural pigment
- Open the hair cuticle for deeper penetration
Correct answer: Deposit additional pigment and neutralize unwanted warm tones
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?
- 15 minutes
- 1 hour
- 24–48 hours (Correct answer)
- 1 week
Correct answer: 24–48 hours
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:
- Protect the scalp from heat damage
- Isolate selected strands and contain the lightener (Correct answer)
- Speed up the processing time
- Prevent the hair from oxidizing
Correct answer: Isolate selected strands and contain the lightener
Foil isolates selected hair strands from the rest of the hair and contains the lightening product to prevent bleeding onto unwanted areas.
Question 6: The hair's natural underlying pigment exposed during lightening progresses from black to:
- Black → red → orange → yellow → pale yellow
- Black → blue → green → yellow → white
- Black → orange → red → yellow → pale yellow
- Black → brown → red → orange → yellow → pale yellow (Correct answer)
Correct answer: Black → brown → red → orange → yellow → pale yellow
As melanin is decolorized, the underlying pigment reveals in stages: black, brown, red, orange, yellow, and finally pale yellow.
Question 7: Semi-permanent hair color differs from demi-permanent color because semi-permanent:
- Contains a small amount of hydrogen peroxide
- Does not penetrate the cortex and contains no developer (Correct answer)
- Deposits color into the cortex without lifting
- Lasts longer than demi-permanent color
Correct answer: Does not penetrate the cortex and contains no developer
Semi-permanent color coats the hair shaft without penetrating the cortex and requires no developer, so it causes no lift and fades with shampooing.
CHS Hair Coloring & Chemical Treatments 2
A client wants to go from level 4 dark brown to level 8 golden blonde.
How many levels of lift are required?