What Is Hair Porosity? In the simplest terms, porosity is your hair’s ability to soak up and hold in moisture and products. There are three levels of porosity: low, medium, and high.
Each strand of your hair has an outer shell of cuticles that kind of look like shingles on the side of a roof
HOW TO TEST FOR HAIR POROSITY
Fill a glass or bowl with room temperature water.
Take a couple strands of your clean hair and put them in the water. Clean hair is important. If you have oils or products on your hair, it will alter your results.
Watch it for 2-4 minutes.
a)If your hair sinks immediately, it has high porosity. Your hair absorbed the water quickly and sank quickly.
b)If your hair is still floating 4 minutes later, it has low porosity. I have low porosity hair.
c)If your hair is slowly sinking, you have normal porosity.
INTERPRETATION OF RESULTS
Hair with low porosity has a tightly bound cuticle layer with overlapping scales that lay flat. This type of hair is usually considered healthy, and is often very shiny, especially when it’s dark in color
Low porosity hair requires moisturizers rich in emollients such as shea butter, jojoba oil, coconut oil and mineral oil
Hair with medium porosity often requires the least amount of maintenance. The cuticle layer is looser, allowing just the right amount of moisture to enter while preventing too much from escaping
High porosity can be either an inherent property of hair or the result of damage from chemical processing, rough treatment or environmental damage.
Be sure to use anti-humectants in climates with high heat and humidity. This will help seal your damaged cuticles and prevent them from absorbing excess moisture in the air.