Glow Beauty The Round Brush in Classic. Glow Beauty The Round Brush in Classic. Meet your blowout's new best friend. The Round Brush is designed to decrease dry time, effortlessly create volume and enhance curls without damaging hair. A vented barrel allows optimal airflow to prevent frizz and maximize styling potential. Durable nylon bristles glide through medium-short and long hair, distributing oils and product for a smooth, healthy finish.. Vented barrel design reduces dry time and heat damage Creates volume, curl, and smoothness in one tool. Lightweight and easy to maneuver. Designed to work on medium-short to long hair. Professional-level results at home. GUTR-WU5. RND-001.