Small Hot Brush. But it is also possible to get smaller or even bigger barrels as per your requirement. Best hot air brush for smoothing:

Hot brushes & air stylers (16) selected currently refined by type: The professional charcoal infused one step blowout hot air brush features boar tech 2 bristles with silk glide and natural max activated charcoal. A session stylist essential, this expertly designed brush is perfect for short hair of all textures, styling short layers and smoothing fringes.

However, Inexpensive Hot Air Brushes Are Often Smaller And A Good Choice For Travel.
3.3 infiniti pro by conair spin air rotating styler. Hot brushes & air stylers (16) selected currently refined by type: Smy hot air brush styler and dryer,rotating hair dryer brush for salon at.
The Best Hot Brushes For 2022 Are:
Infinitipro by conair hot air spin brush, 2 inch and 1 1/2 inch, black. Fast heating ceramic barrel for effective blowdrying. Babyliss pro classic 19mm tourmaline ceramic hot air brush.
The Ceramic Tube Heats Quickly, Allowing Styles To Be Dried Quickly And Efficiently.
(30) save up to 1/2 price on selected electrical hair styling. Hot air brushes range in price from $25 to over $100. Combination of boar and ionic nylon bristles to combats static.