Hair Porosity is not a term you will come across every day. We are often so preoccupied with determining our hair type, curl type, hair density, and so on that we rarely consider hair porosity.

You might have heard of the term hair porosity and wondered what it meant. Hair porosity refers to your hair's ability absorb and retain moisture. Your hair's porosity determines how easily oils and moisture can pass through your cuticle, the outermost l...