California Cosmetology Written ExamHaircoloringHard
A client with level 7 virgin hair wants to achieve a level 9 pale blonde result with cool ash toning. Which two-step process must the colorist perform to achieve this result?
- AA single-process permanent color application only
- BA semi-permanent rinse followed immediately by a second identical semi-permanent rinse
- CA demi-permanent gloss applied directly over virgin hair with no lightening
- DA double-process service: first lightening the hair, then applying a toner to neutralize unwanted warmth
Show answer & explanationAnswer & explanation
Correct answer: D. A double-process service: first lightening the hair, then applying a toner to neutralize unwanted warmth
To achieve a pale, cool blonde result from level 7 hair, the colorist must perform double-process color: first lightening the hair to the appropriate pale yellow stage, then applying an ash-based toner to neutralize the residual yellow/orange warmth and achieve the desired cool level 9 result.
Why the other options are wrong
- A. A single-process application cannot both lift to level 9 and neutralize warmth with the precision toning requires
- B. Repeating semi-permanent rinses cannot lighten hair or achieve the needed level change
- C. Virgin level 7 hair lacks enough natural lift for a demi gloss alone to reach pale level 9
Double-Process Color
A two-step haircoloring service involving lightening the hair first, followed by a separate toner application to achieve the final shade.
- Step 1: Lightener lifts natural pigment to desired stage
- Step 2: Toner neutralizes unwanted underlying pigment
- Commonly used for pale blonde results from darker natural levels
Memory trick: Double process = 'lighten then tone', two separate visits to the color bowl