California Barber Written ExamHair Care ServicesMedium
A barber is preparing to apply a permanent hair color that requires mixing a 1:2 ratio of color to developer. If the formula calls for 1.5 ounces of color, how much developer should be used?
- A0.75 ounces
- B4.5 ounces
- C1.5 ounces
- D3.0 ounces
Show answer & explanationAnswer & explanation
Correct answer: D. 3.0 ounces
A 1:2 ratio means for every 1 part of color, there are 2 parts of developer. So, if you have 1.5 ounces of color, you need to multiply 1.5 by 2 to find the amount of developer needed: 1.5 oz (color) * 2 = 3.0 oz (developer).
Why the other options are wrong
- A. This would be a 2:1 ratio (0.75 color for 1.5 developer), incorrect.
- B. This would be a 1:3 ratio, incorrect.
- C. This would be a 1:1 ratio, incorrect.
Hair Color Mixing Ratios
The specific proportions of hair color to developer, indicated by numbers (e.g., 1:1, 1:2), that must be accurately measured and mixed to achieve the desired coloring results.
- First number represents color, second represents developer.
- Crucial for proper lift, deposit, and longevity of color.
- Inaccurate ratios can lead to poor results or damage.
Memory trick: Ratio Rules: Color's Part, Developer's Art