By Tiffany Walker
Porosity is a fancy way of saying how “porous” something is. In this case, we’re talking about hair, so hair porosity is how poroushair is. And yes, the porousness of hair varies from person to person and affects how the hair looks, feels, and handles certain products.
The first thing that probably comes to mind when describing something as porous is a sponge, and that’s exactly what you can picture when you consider the porosity of your hair. The more porous hair is, the more it acts like a sponge, absorbing moisture. The less porous hair is, the less moisture it absorbs.
There are three general levels of hair porosity: high porosity hair, medium porosity hair, and low porosity hair. Knowing your hair’s porosity level will help you understand why your hair looks, feels, and acts a certain way and how to take care of it.
Based on the hair porosity definition above, high porosity hair means the hair is extremely porous. Signs of high porosity hair include the ability to quickly absorb water and moisture. In terms of hair, the more open the hair’s cuticle, the more porous it is. The hair cuticle is the outermost layer of the hair, made up of smaller cuticles that are layered on top of each other (think: shingles on a roof). When these cuticles lift, the cuticle is open. This makes it easy for moisture to reach the hair shaft or inner layer of hair, but difficult for the hair shaft to retain moisture because it can escape through the open hair cuticle just as easily as it entered.
Low porosity hair, unlike highly porous hair, does not quickly absorb water and moisture. Instead, water and product tend to sit on top of the hair, rather than penetrate it. This happens in low porosity hair because the cuticles are closed and bound tightly together—picture shingles that lie close together and flat to a roof. This makes it tough for moisture to penetrate the hair shaft.
...And why should I care? Well, knowing the science behind your hair is what will help you master it. If you’re aware of your hair porosity type, you can use more efficient products and tools, such as the L.O.C. hair method, to manage, style, and maintain it better. That’s right, there are different low porosity and high porosity hair products, tools, and techniques you should be using based on your hair type.
While you may have an inkling of whether your hair porosity is high or low based on how we have described it so far, it’s not always so simple to determine hair’s porosity level. However, you can test the porosity of your hair in a few simple ways:
Now that you understand what hair porosity is and what your individual hair porosity type is, you can approach your hair care regimen accordingly. Both high and low porosity hair care has its perks and challenges. Explore how to fix high porosity hair or learn how to grow low porosity hair, and shop for all the natural hair products you need whether your hair is porous or not.
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