Hair

High Porosity vs. Low Porosity Hair: How to Tell Which One You Have (and Care for It Right)

You bought the products everyone swears by, and your hair still feels dry, or greasy, or both in the same week. Before you buy one more thing, learn your porosity, it explains why products behave completely differently on your hair than on your best friend's. Here's what porosity actually is, how to test yours at home tonight, and exactly how to care for each type.