What type of hair is likely to exhibit high porosity?

High porosity hair has a raised cuticle layer, making it more susceptible to absorbing moisture and chemicals. This characteristic often results from damage due to various factors, such as excessive heat styling, chemical treatments, or environmental exposure. Damaged hair tends to be porous because the cuticle has been compromised, allowing moisture to enter and escape more easily.

In contrast, untreated hair generally maintains its cuticle integrity, making it less porous. Oily hair, while it may feel different due to the excess sebum, doesn’t inherently have high porosity; it can actually be less porous due to the layer of oil protecting the cuticle. Thick hair can also vary in porosity; it is often strong and healthy, retaining moisture well unless it has been damaged. Thus, damaged hair is the most direct correlate to high porosity, making it the correct choice.