Blow dryers, also called hair dryers, are devices that produce hot and/or cool air to dry hair after a shower. However, there are other synonyms that are less commonly used. For instance, a wind machine, an air blower, a hair blaster, or a hair styling tool can all refer to what we commonly know as a blow dryer. Other informal terms include blowgun and blow tube. While there may be different names for this beauty tool, the purpose remains the same: to deliver an airflow that reduces the drying time of hair, leaving it smooth and shiny.