Round brush
A cylindrical brush used while blow-drying to smooth hair and curve the ends.
Also: radial brush
A round brush has bristles all the way round a barrel. While blow-drying, the stylist winds a section of hair around it and moves it down the length, with the dryer following, to smooth the hair and curve the ends under or out. Barrels with metal or ceramic cores hold heat and set curls faster. Small brushes give tight bends, for short hair and fringes; large ones give soft volume. Round brushes made feathered and curtain styles possible.