The primary differences between traditional hair dryers and high-speed hair dryers lie in their motors, airflow speed, temperature, and additional features. High-speed hair dryers typically utilize brushless motors, offering faster rotational speeds and higher airflow velocities; moreover, they often incorporate hair-care functions—such as negative ion technology—to protect the hair. In contrast, traditional hair dryers predominantly employ carbon-brush motors, which generate lower airflow speeds and are more prone to causing hair damage.