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what is hair porosity

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Natural Hair Science: The Importance of Knowing Your Hair Porosity

The most common concerns with natural hair that I hear about or receive emails on are usually, “How can I get my curls to pop?” “I’m not receiving enough moisture.” “How can I get my hair to grow?” These are the typical concerns for naturals and new naturals. Trust me, I get it. I understand that desire for long luscious hair. However, we must go deeper into understanding our hair. You must understand your hair’s porosity if you want to seriously achieve healthy growing hair.

Hair porosity is one of the most overlooked hair properties. Not knowing your hair’s porosity level can in fact be detrimental to your “hair growth” journey. Once you identify your hair’s porosity level, you will know what products to use. You will then notice your hair retaining moisture and becoming healthy. Let’s take a look at the different levels of hair porosity and more importantly, how you can find your hair’s porosity level.

Hair Porosity
Hair porosity is your hair’s ability to absorb moisture or the ability for liquid, air, or chemicals to pass through or out the layers of the cuticle. Now, the cuticle, the overlapping scales of the hair, is the major player in this whole game when it comes to hair porosity. Because, wherever the position of your cuticles sit, it will determine your hair condition, i.e. whether your hair is dry, frizzy, limp, moisturized, gets tangled easily, etc. And there are three levels to porosity — Normal, High, and Low.

Normal Porosity
The cuticles are normally healthy. The position in which the cuticles sit allows product to penetrate and keep hair moisturized. For the most part, with this level, the hair is shiny, smooth, and soft. Liquids or products that penetrate the cuticle will enter and stay, which keeps your hair moisturized (figure 1-1).

normal porosity

High porosity
The cuticles are very porous. The appearance of the cuticle in high porosity hair may look uneven or frizzy because the cuticles are raised and lifted. The cuticles are opened, willingly to receive moisture and more moisture and even more moisture (figure 1-2). Sounds great. Right? However, the problem is that because the cuticles are greatly opened, an abundant source of moisture is escaping the hair. This can lead to breakage and may even leave your hair dry and damaged because the hair is not being properly moisturized.

high porosity (1)

Low porosity
The cuticles sit flat and are very tight or compacted. Because of this, the cuticle will most likely not allow for liquid, air, chemical treatments, or products to penetrate the hair shaft. This can cause product build-up because the products are just sitting on your hair. The cuticles are not opened enough for the cortex to receive the hydration and moisture that it needs (figure 1-3). The key for low porosity hair is that it needs hydration and moisture.

low porosity (1)

Want to know what porosity level you have? Simply take the hair porosity test and find out.

1. Fill a glass half way with tepid water.
2. Pull out a strand of your hair.
3. Place your strand into the glass water for 2-5 minutes.

After your time is up…
• If you hair stayed at the top you have low porosity hair.
• If you hair floats around the middle, then you have normal porosity hair.
• If you hair sinks to the bottom, you have high porosity hair.

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Once you have discovered your porosity level, you are armed with the knowledge you need to pick out the perfect hair care products that work best for your hair. No more guessing, no more wondering why a particular product isn’t working for you. Only better results. So get to know your hair better. Explore your porosity level today!

For additional information, view a detailed video on Identifying Your Hair Porosity:

About the author: Claire Brown is the owner and founder of Kriya Botanicals, an all natural hair care product line. With a degree in Exercise Science, she uses her health and science background to develop all natural hair care products. For a breakdown of each porosity level, or additional hair care tips, visit today or follow her on Facebook and Instagram.

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How to Tackle Natural Hair With High Porosity

Natural hair with high porosity can be frustrating, but don’t let it get you down. Check out the article below from and fight that high porosity! read more

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Understanding Natural Hair Porosity 101

Her Curly Girls! We’ve found an awesome new resource for you! Nyasha Gowara, and her blog: It’s stuffed full of useful info for growing and caring for natural hair. If you’ve been suffering from dry hair, her articles on hair porosity are sure to point you in the right direction. read more