Question of the Week: What is hair porosity? Hair porosity is the measurement of how well your hair can absorb and retain moisture. When you have high porosity hair, your hair cuticles are raised and allow moisture and oil to enter and leave your hair shaft easily. This can lead to frizzy, dry, and damaged hair. Low-porosity hair has tightly compacted cuticles that make it difficult for moisture and oil to enter the hair shaft. This can lead to healthy, shiny, and bouncy hair. There are a few key differences between low and high-porosity curly hair. Low porosity hair is more tightly compacted and doesn't allow moisture to penetrate as easily. This type of hair is also more resistant to protein treatments. High-porosity hair is more open and porous, which means it absorbs moisture more easily. This type of hair is more susceptible to protein treatments. Low porosity hair is more tightly compacted and doesn't allow moisture to penetrate as easily. This means that low-porosity hair tends to be dryer and more brittle than other types of hair. Low porosity hair also doesn't hold color as well, so it can be more difficult to achieve and maintain vibrant hair color. If you have low-porosity hair, you may need to use special products and techniques to help keep your hair healthy and hydrated. High-porosity hair is more open and porous, which means it absorbs moisture more easily. This can be a good thing or a bad thing, depending on your hair type. If you have dry or damaged hair, high-porosity hair can help your hair retain moisture and look healthier. However, if you have oily hair, high-porosity hair can make your hair look greasy and oily more quickly. Would you like to learn more? What questions do you have?