California Barber Written ExamHair Care ServicesHard
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 hair color, how much developer should be measured?
- A4.5 ounces
- B0.75 ounces
- C3.0 ounces
- D1.5 ounces
Show answer & explanationAnswer & explanation
Correct answer: C. 3.0 ounces
A 1:2 ratio means for every 1 part of color, you need 2 parts of developer. So, if you have 1.5 ounces of color, you multiply 1.5 by 2, which equals 3.0 ounces of developer.
Why the other options are wrong
- A. 4.5 ounces would be a 1:3 ratio, which is incorrect.
- B. 0.75 ounces would be a 2:1 ratio (color to developer), which is incorrect.
- D. 1.5 ounces would be a 1:1 ratio, which is incorrect for a 1:2 ratio.
Hair Color Mixing Ratios
Precise proportions of hair color to developer, typically expressed as X:Y, that must be accurately measured to achieve the desired color result and proper chemical reaction.
- Ratio X:Y means X parts color to Y parts developer
- Accuracy is crucial for color outcome
- Common ratios: 1:1, 1:1.5, 1:2
Memory trick: Ratio math: Color is X, Developer is Y. Just multiply!