What common problem is associated with high porosity hair?

High porosity hair is characterized by an open cuticle layer, which allows for easier penetration of moisture but also makes it difficult for the hair to retain that moisture. As a result, individuals with high porosity hair often experience dryness and frizz, as the moisture quickly escapes the hair shaft. This condition arises from various factors, such as heat damage, chemical treatments, or even genetics, leading to the hair's inability to hold onto the hydration it needs.

In contrast, other conditions such as minimal gaps between hair strands, excessive shine, and rapid growth are not typical indicators of high porosity. Minimal gaps might suggest a healthier or more compact hair structure, while excessive shine relates more to the hair's health and moisture levels. Rapid growth pertains to the rate at which hair grows, which is more related to factors like genetics and health rather than porosity levels. The key issue with high porosity hair revolves around the challenge of moisture retention, clearly making the inability to retain moisture the most relevant problem associated with it.