If the cuticle is lifted and the hair takes color quickly, how is the hair characterized?

If the cuticle is lifted and the hair takes color quickly, the hair is characterized as having high porosity. High porosity hair has gaps and holes in the cuticle layer, which allows moisture and color to be absorbed more easily. This characteristic often results from damage from chemical processing, heat, humidity, or environmental factors. When the cuticle is not lying flat, it creates pathways for color to penetrate, leading to a quicker uptake of dye.

In contrast, low porosity hair has a tightly closed cuticle, which makes it resistant to moisture and color absorption. Medium and normal porosity generally have cuticles that are more balanced, allowing for some absorption but not as rapidly as high porosity hair. Therefore, understanding hair porosity is crucial for selecting the appropriate hair care products and coloring techniques, as it directly impacts how hair interacts with color and moisture treatments.