The Wet Brush® Refresh & Extend Speed Dry® features a unique triple-bristle tehcnology to help keep hair healthy, soft, and shiny. HeatFlex® bristles gently detangle wet or dry strands, plus charcoal infused bristles and ultra-soft TPE strips reduce frizz and improve manageability. The open vented design allows for air to pass through the brush, speeding up drying time and lessening your hair's exposure to heat.