3 functions in 1 brush: it works as a detangler, shampoo brush, and styling tool. It effectively removes debris and dead strands while providing a gentle scalp massage. Heat enters through the back hole and is released through the front holes for faster drying, protecting your scalp from direct heat. Water flows easily through the vents. Use it after forming a sufficient lather while shampooing. Hair Brush Vent Paddle-Shaped 7.5x25cm Tina Beauty