Texas Class A Barber Written ExamChemical ServicesMedium
A barber is preparing to apply a permanent hair color with 20 volume peroxide developer. The client's hair is naturally a level 4 (medium brown) and they desire a level 6 (light brown) result. What is the approximate amount of lift expected from a 20 volume developer?
- A3 levels of lift
- B2 levels of lift
- C4 levels of lift
- D1 level of lift
Show answer & explanationAnswer & explanation
Correct answer: B. 2 levels of lift
A 20 volume peroxide developer is generally formulated to provide approximately 1 to 2 levels of lift when used with permanent hair color. In this case, to achieve a level 6 from a level 4 (2 levels of lift), 20 volume developer is appropriate.
Why the other options are wrong
- A. 3 levels of lift would typically require 30 volume developer.
- C. 4 levels of lift or more would typically require 40 volume developer or a high-lift tint.
- D. 1 level of lift is typically achieved with 10 volume developer or sometimes 20 volume on very fine or porous hair.
Developer Volume & Lift
The strength of hydrogen peroxide in a developer, which determines the amount of lift (lightening) it provides when mixed with hair color or lightener.
- 10 Volume: 1 level of lift
- 20 Volume: 1-2 levels of lift (standard for permanent color)
- 30 Volume: 2-3 levels of lift
- 40 Volume: 3-4 levels of lift
Memory trick: 20 'V'olume 'V'alues 'T'wo 'L'evels