NIC Barber Written (Theory) ExamHair Care ServicesMedium
A barber is preparing to perform a hair coloring service. The client has 50% gray hair and desires a permanent hair color that will provide full gray coverage. The manufacturer's instructions state a mixing ratio of 1:1. How much color product and developer should the barber use to achieve 2 ounces of total mixed product?
- A0.5 ounce color, 1.5 ounces developer
- B2 ounces color, 2 ounces developer
- C1.5 ounces color, 0.5 ounce developer
- D1 ounce color, 1 ounce developer
Show answer & explanationAnswer & explanation
Correct answer: D. 1 ounce color, 1 ounce developer
A 1:1 mixing ratio means one part color to one part developer. To achieve a total of 2 ounces of mixed product, you would need 1 ounce of color and 1 ounce of developer (1 + 1 = 2). This ensures the correct proportion for optimal gray coverage and color development.
Why the other options are wrong
- A. This ratio is 1:3, not 1:1, and results in 2 ounces total.
- B. This would result in 4 ounces of total mixed product, not 2 ounces, and maintains a 1:1 ratio but not the desired total volume.
- C. This ratio is 3:1, not 1:1, and results in 2 ounces total.
Hair Color Mixing Ratio (1:1)
A common hair color mixing instruction indicating that equal parts of color product and developer should be combined.
- Expressed as '1 part color to 1 part developer'.
- Critical for proper color development and gray coverage.
- Total volume is the sum of the color and developer parts.
Memory trick: Ratio 1:1? Equal parts, total sum!