When haircare professionals talk about porosity, they are referring to your hair’s ability to absorb moisture. If your hair is highly porous, it has more holes in its surface layer, called the cuticle.

Whether hair is fine, thick, long, short, matte, glossy, curly, coily, or straight, your hair deserves care. Getting to know your hair's curl patterns, porosity, density, and styling needs is important because healthy self-care includes your hair.