What type of hair is primarily characterized by a high level of porosity?

Damaged hair is primarily characterized by a high level of porosity due to its compromised structure. When hair becomes damaged, whether from chemical processes, heat styling, or environmental factors, the cuticle that protects the inner layers of the hair becomes weakened or even broken. This damage allows moisture and other substances to enter and exit the hair shaft more easily, leading to increased porosity.

In contrast, healthy hair typically exhibits a lower porosity level, which means the cuticle layers are intact and effectively protect the inner structure of the hair. Coarse hair can have varying levels of porosity, but it is not inherently characterized by high porosity. Virgin hair, which has never been chemically treated or altered, also has low porosity as its structure remains intact. Understanding the porosity level is essential for determining the appropriate hair care products and treatment methods.