The Wet Brush Speed Dry brush's vented design speeds drying time by allowing moisture to escape faster, and its heat-resistant bristles gently detangle while blow drying. Skip the extra heat and avoid damage, keeping your hair healthy and happy. The OmniFlex brush head flexes in every direction to contour to the scalp. The open vented design removes excess moisture and speeds drying time. HeatFlex bristles are heat resistant for blow dry styling.