What effect does a color with high porosity have on hair dye?

A color with high porosity refers to hair that has an increased ability to absorb moisture and other substances, including hair dye. When hair has high porosity, the cuticle layers are often raised or damaged, allowing color to penetrate more easily and rapidly into the hair shaft. This means that the hair will absorb dye quickly, leading to a more immediate and intense color change during the dyeing process.

The rapid absorption of dye by highly porous hair is due to the structure that allows the dye molecules to enter the shaft without significant resistance. This characteristic is particularly important to consider when formulating and applying hair color, as it can affect the final color result and the overall condition of the hair after the coloring process.