All About Hair Porosity Part I

Updated: Sep 30, 2020



Welcome back, Family!

Today we will be digging into Hair porosity.

So many everyday hair struggles like frizziness, persistantly dry hair and some breakage can be solved with knowing more about your hairs porosity and the right products to care for your hair!

So let's jump in!





Let's start with what porosity is.


Porosity is a measurement of your hair's ability to absorb and hold moisture.

You can also think of it as indicating how easily moisture can penetrate your hair. Porosity

is determined by the structure of your cuticle- the outer layer of your hair.

This is important because knowing your porosity will help you determine the best ways to maintain, style, hydrate, deep condition, and keep your hair healthy.


Hair Porosity is broken down into three categories:

  • Low

  • Medium (or normal)

  • and High.







The Above Diagram gives you an example of a magnified low porosity hair strand.


What is Low porosity hair?


Your hair is basically a collection of dead cells that are arranged in a distinct, three-layer pattern:

  • The cuticle is the outermost layer of your hair. It comprises individual cuticles that overlap each other, like the tiles on a roof.

  • The cortex is the middle and thickest layer. It contains fibrous proteins and pigments that give your hair its color.

  • The medulla is the central, innermost layer of the hair shaft.

With low porosity hair, the cuticles tend to overlap each other and are