Customised styling with less pain, effort and breakage. WetBrush Break-Free Custom Style Hot Tube Brush features adjustable vents for ultimate versatility. Ultra-soft nylon bristles smooth and add volume without painful snagging, while exclusive HeatFlex bristles effortlessly detangle knots. Adjustable vents personalise airflow with the turn of a dial, allowing you to customise your styling. Innovative VitaBoost infused barrel and bristles coat hair with nourishing biotin and keratin to help strengthen and protect.