Florida Cosmetology Licensing ExamHair ServicesMedium
A cosmetologist is performing a hair coloring service on a client who has 75% gray hair and desires a permanent color that will provide complete gray coverage and a natural-looking result. Which of the following color formulations would be most appropriate?
- AA permanent color mixed with 20 volume developer, possibly adding a neutral tone.
- BA semi-permanent color applied directly to the gray hair.
- CA demi-permanent color 1-2 shades lighter than the target shade.
- DA permanent color mixed with 10 volume developer.
Show answer & explanationAnswer & explanation
Correct answer: A. A permanent color mixed with 20 volume developer, possibly adding a neutral tone.
For 75% gray hair requiring complete coverage, a permanent color is essential. 20 volume hydrogen peroxide developer is typically used with permanent colors to provide optimal lift and deposit for effective gray coverage. Adding a neutral tone helps ensure a natural-looking result by filling in the lack of pigment in gray hair.
Why the other options are wrong
- B. Semi-permanent colors only stain the cuticle and will not provide complete or long-lasting coverage for significant gray hair.
- C. Demi-permanent colors offer translucent coverage and will not provide opaque, complete coverage for 75% gray hair.
- D. While permanent color is correct, 10 volume developer provides minimal lift and may not be sufficient for optimal gray coverage, especially if a slight lift is needed for an even tone.
Gray Hair Coverage with Permanent Color
The process of using permanent hair color and appropriate developer to achieve opaque and lasting coverage of gray hair, often requiring specific formulation adjustments.
- Permanent color is necessary for complete coverage.
- 20 volume developer is standard for gray coverage.
- Neutral/natural tones are often added to ensure full color deposit and natural look.
Memory trick: To cover gray so it won't stray, permanent color and 20 vol lead the way, with neutral to brighten the day.