A Guide to Hair Porosity.

You may have started to hear the term “porosity” often, but what is it? Why is it important? Read below to find our short guide on hair porosity!

What is it?

In summary, hair porosity refers to your hair's ability to absorb and retain moisture. This affects how well oils and moisture pass in and out of the outermost layer of your hair, also known as the hair cuticle. Hair porosity is also divided into three broad categories:

  • Low porosity: cuticles are closer together, causing water to repel from the hair when you try to wet it
  • Medium porosity: cuticles that are less tightly bound and,
  • High porosity: cuticles that are more widely spread, causing the hair to be prone to frizz and tangling from letting in moisture.

What causes your porosity?

There are a wide range of factors that contribute to your hair’s porosity, with the main one being largely genetics. Other significant factors include heat techniques, styling products and harsh procedures that can cause the hair cuticles to become more raised and open, in turn causing your hair to be affected and damaged. UV exposure is also a contributor – we’ve recently written a blog post all about sun damage, click here to read more!

How can I find out my porosity?

You can most definitely test your hair porosity at home! Firstly, grab a clear glass of water and a clean strand of hair (after washing to remove any build-up on the hair). Put your strand of hair in the water and observe.

  • If your hair porosity is low, it will float.
  • Medium porosity will float and begin to sink slowly.
  • Whilst high porosity will sink immediately!

 Let us know if you try out this method in the comments below!