A blow dryer is a handy tool used to dry and style hair quickly. It works by blowing warm air over wet hair, which helps evaporate the moisture. Most blow dryers have different heat and speed settings, allowing users to customize their drying experience. They are popular among people who want to achieve a polished look without waiting for their hair to air dry. Using a blow dryer can also help create various hairstyles. For instance, with the right technique and a round brush, you can add volume and curls. Many people use blow dryers in combination with hair products like mousse or heat protectant to enhance their style and protect their hair from damage.