Wet Brush Epic Professional Extension Hairbrush is a professional brush that is specially designed to be used for extensions. The unique IntelliLoop bristles are heat resistant, and have a unique shape with closed ends that slide easily through the filter hair and knots. The bristles get much closer to the hair roots without getting stuck in the applications as a standard hairbrush will do. Make your extensions last longer with this lightweight hairbrush in an ergonomic design.