Review Of Porosity Definition Hair Ideas. Web porosity is the hair’s ability to absorb and retain moisture or chemicals in the hair’s cuticle layer and cortex or the lack thereof. When we talk about hydrating, moisturizing, and conditioning your hair, we have to keep in mind that all hair has different abilities in doing and maintaining all of those functions.

Simply put, hair porosity refers to a strand of hair’s ability to absorb and retain moisture. Web hair porosity is a term that’s used to describe how well your hair is able to absorb and retain moisture and oils. Web hardges says to watch the strand to see if it sinks to the bottom of the bowl or floats at the top.