Hair Porosity 101

Janet Gilbert

Hair porosity refers to the hair's ability to absorb water, moisture, or chemicals through the cuticle into the cortex. The cuticle layer covers and protects the hair shaft. Moisture is diffused in and released out through the cuticle layer. All hair types have some level of porosity. The degree of porosity is directly related to the condition of the cuticle layer. Healthy hair usually has low porosity. The cuticle layer is flat and tight so that very little moisture is allow into or out of the shaft. Low porosity occurs when the hair is resistant and absorbs the least amount of moisture. 

Hair with average porosity is considered normal. This hair type usually absorbs water, moisture, and chemicals based on its texture. That is the hair condition, diameter, and curl pattern. Different degrees of porosity can be found in all hair types and textures. 

Understanding your hair porosity helps you choose which products to use for your hair. To test the porosity of your hair, wet a clean section of your hair. If the water droplets sits on your hair, it can indicate low porosity. If the hair absorbs the water quickly through the cuticle, it is likely high porosity. 

High porosity hair requires an intensive moisture regime and protein treatments. We recommend using our Say Hey To Hydration Deep Conditioner at least twice a month. Apply the deep conditioner and cover with a plastic cap. Sit under a dryer (on low heat) for 30 minutes. Rinse out the deep conditioner with cold water. The LOC method is also great for high porosity hair. 

Have you ever tested your hair's porosity? If so, let us know in the comments! 













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