Which factor contributes to the fragility of fine hair?

Fine hair is characterized by having a smaller diameter compared to other hair types, such as medium or coarse hair. This smaller diameter means that each strand is thinner and less robust, contributing to the hair's fragility. The structural makeup of fine hair makes it more susceptible to damage from environmental factors, mechanical stress, and chemical treatments.

While other factors like lack of moisture and high porosity can also affect hair health, the intrinsic property of having a small diameter is a primary reason why fine hair tends to be more fragile. Low acidity is not a significant contributor to hair fragility, as hair's pH balance is a separate concern, more related to overall scalp and hair health than to the inherent strength or fragility of the hair strands themselves.

Understanding the characteristics of fine hair helps in choosing appropriate care methods and products that can enhance its strength and resilience.