A hair dryer is an electrical device used to dry and style hair by blowing warm or cool air over wet strands. It speeds up the natural drying process and helps shape hair into different styles such as straight, wavy, or voluminous looks.

Modern hair dryers come with adjustable heat and speed settings, allowing users to control airflow based on their hair type and styling needs. Many models also include features like a cool shot button (to set hairstyles), ionic technology (to reduce frizz and add shine), and attachments such as diffusers or concentrator nozzles for more precise styling.

Hair dryers are commonly used at home and in salons, making them an essential tool for daily grooming and professional hairstyling.