What is the main function of a hair blow dryer in hairstyling?

The main function of a hair blow dryer in hairstyling is to dry and style hair into shape. This is achieved through the use of hot air, which evaporates moisture from the hair and allows for shaping and volume to be added as desired. When using a blow dryer, stylists can manipulate the hair while it is drying, facilitating various styles, textures, and finishes.

While adding shine to hair can be a benefit of using a blow dryer—especially when combined with styling products or techniques—the primary purpose remains drying and styling. Protecting hair from damage is essential, but the blow dryer itself does not provide protective qualities inherently. Additionally, while blow dryers can assist in straightening curly hair, they are not exclusively designed for that purpose; many other tools and techniques are available for straightening as well. Thus, the blow dryer serves as a multifunctional tool primarily aimed at drying and shaping the hair.