Delaware Cosmetology and Barbering Practice Exam

Which hair type has the highest porosity?

1. Fine hair

2. Medium hair

3. Coarse hair

4. Textured hair

The correct answer is: Coarse hair

Coarse hair is characterized by having the highest porosity among the options listed. Hair porosity refers to the hair's ability to absorb moisture and other substances, which is largely determined by the structure of the hair cuticle. Coarse hair typically has a more raised cuticle layer, allowing for greater space between hair strands and making it more porous. This means that coarse hair can absorb moisture quickly, but it can also lose moisture just as easily, requiring more intensive hydration and care. In contrast, fine hair has a smoother cuticle surface and tends to have lower porosity, making it less able to absorb moisture as quickly. Similarly, medium hair generally falls between fine and coarse in terms of porosity and moisture retention. Textured hair, which may have curls or waves, can vary widely in porosity depending on the specific characteristics of the hair; however, it often does not reach the same level of porosity as coarse hair. This understanding of hair types and porosity is crucial for selecting appropriate hair care products and techniques to maintain healthy hair.