Blow drying refers to using a tool called a blow dryer, which is a small, hand-held appliance, to fan warm or hot air over hair. It can be used to dry the hair or to create a certain style of hairdo.
A blow dryer usually has settings ranging from cool to hot. Some experts suggest the best way to get a smooth hairdo with blow drying is to always point the blow dryer towards the ends of the hair, according to Real Simple. They also suggest using a round brush in tandem with the blow dryer, to shape the hair as it dries.