👉 Hairdryers are devices that use a fan to blow hot air directly into the hair of an individual, typically in order to heat it up and make it more manageable. These devices are commonly used by people who want to dry their hair quickly and easily without having to comb or straighten it manually. They can be found in many different styles and sizes, from small handheld models to larger portable units that can be powered by a battery pack or plugged into an electrical outlet.