Final answer:
The hair is considered to be porous when the cuticle is lifted and it takes color quickly. Porosity is the hair's ability to absorb moisture and other substances.
Step-by-step explanation:
When the cuticle is lifted and the hair takes color quickly, the hair is said to have porous characteristics. Porosity refers to the hair's ability to absorb and retain moisture. If the cuticle, which is the outermost layer of the hair, is lifted or damaged, it can easily absorb hair color, treatments, and chemicals, which can lead to quicker color uptake but also potential damage if not handled properly.