Florida Cosmetology Licensing ExamHair ServicesMedium
A cosmetologist is performing a hair coloring service and needs to lighten the client's natural hair by 3-4 levels. Based on standard developer guidelines, which volume of hydrogen peroxide would be most appropriate to achieve this level of lift?
- A40 Volume
- B10 Volume
- C30 Volume
- D20 Volume
Show answer & explanationAnswer & explanation
Correct answer: C. 30 Volume
30 Volume hydrogen peroxide is typically used to achieve 3-4 levels of lift with permanent hair color or lightener, providing stronger lightening action than 10 or 20 volume.
Why the other options are wrong
- A. 40 Volume provides 4 or more levels of lift but is generally not recommended for on-scalp applications due to potential irritation and damage.
- B. 10 Volume is used for depositing color, achieving 1 level of lift, or toning.
- D. 20 Volume is used for up to 2 levels of lift, covering gray, or for standard permanent color applications.
30 Volume Hydrogen Peroxide
A concentration of hydrogen peroxide developer that provides 3-4 levels of lift when mixed with permanent hair color or lightener.
- Provides 3-4 levels of lift
- Used for significant lightening
- Can be used off-scalp for highlights or on-scalp with caution
- Stronger than 10 or 20 volume, but less strong than 40 volume
Memory trick: Remember 'Ten, Twenty, Thirty, Forty' for increasing lift.