Now in Stock! The new + improved 2-in-1 hair styling tool that combines a round hair brush and blow dryer to easily and quickly create a smooth, bouncy, salon quality blowout at home! Hair blow dryer brush 2.0 is the new and improved version of our bestselling hair tool, which combines a round brush and blow dryer for a voluminous blowout with 2x the shine*. improvements to the internal design and mechanisms have gone through extensive testing to ensure product longevity.