Hair that absorbs the least moisture due to closed cuticle layers is described as which porosity category?

• A. High porosity
• B. Medium porosity
• C. Resistant / Poor porosity
• D. Super porosity

Answer: (C)

Porosity reflects how open or closed the cuticle scales are and how easily moisture can penetrate the hair. When the cuticle layers are tightly closed, moisture has a hard time getting in, so the hair absorbs less overall. That situation is described as resistant or poor porosity (low porosity), where the barrier is tight and moisture uptake is limited. In contrast, high porosity has raised, damaged cuticles that absorb moisture quickly but also lose it quickly; medium porosity is a balanced, moderate absorption. The term super porosity isn’t a standard description for this scenario and would not fit the idea of a very tight, moisture-resistant cuticle.