Hair brush. Toothbrush. Dry brush? Brushing your hair and teeth is part of your daily routine, but what about brushing your skin? If this thought has never even occurred to you, you’re not alone. Why dry brush? Well, drying brushing has some pretty incredible health and beauty benefits - it's even starting to appear on trendier spa menus. But you don't need to visit the spa to reap the benefits of dry brushing.