What does porosity in hair refer to?

Porosity in hair refers to the hair's ability to absorb moisture, making it crucial for understanding how hair interacts with water and various hair products. Hair porosity is influenced by the condition of the hair cuticle, which is the outermost layer. When the cuticle is slightly raised or damaged, hair tends to absorb moisture more easily but may also lose it just as quickly. Conversely, tight cuticles can result in low porosity, making it harder for moisture to penetrate the hair shaft.

Understanding porosity helps in selecting the right hair care regimen. For instance, highly porous hair often requires more moisture and protective products, while low porosity hair benefits from lighter products that can penetrate the hair easier. This distinction is essential for anyone working in hair services as it directly impacts how to treat and care for different hair types effectively.