In this episode, we’re breaking down hair porosity—one of the most important but misunderstood concepts in hair care, hair health, and professional hair education. If you’ve ever wondered why some hair absorbs moisture instantly while other hair repels products, or why hair color fades quickly on certain clients, the answer often comes down to porosity. We’ll cover the three types of hair porosity (low, medium, and high), how to test hair porosity, and how porosity affects moisture retention, hair damage, product absorption, and color longevity. Whether you’re a hairstylist, cosmetology student, or someone trying to understand their own hair, this episode will give you practical tips for choosing the right hair treatments, conditioning routines, and styling products based on porosity.