Oklahoma Cosmetology Board Practice Exam

Which type of hair is typically more resistant to chemical processing?

1. Straight hair

2. Coarse hair

3. Fine hair

4. Medium hair

The correct answer is: Coarse hair

Coarse hair is typically more resistant to chemical processing due to its structural characteristics. The thickness of coarse hair strands means there are more layers of cuticle, the outer protective layer of the hair. This added thickness not only provides a stronger barrier against chemical agents but also makes coarse hair less porous compared to finer hair types. As a result, coarse hair is less likely to absorb chemicals quickly, which can contribute to its resistance during processes like coloring or perming. This resistance can be advantageous in certain situations, allowing for more controlled application of chemicals, but it also means that achieving the desired effect might require more time, stronger formulations, or multiple applications when working with coarse hair. Understanding this characteristic is vital for cosmetologists when determining treatment plans for clients with different hair types.