The GHD Duet Blowdry is an innovative 2-in-1 hair dryer brush that transforms hair from wet to blow-dried with no heat damage¹. It features Heat-Air Xchange Technology™ that actively heats the elliptical barrel and snag-free bristles for smooth, voluminous styling. The powerful yet low-temperature motor dries and styles hair simultaneously, offering frizz-free, shiny, bouncy hair with 50% more humidity resistance.