PRO-MOISTURE SYSTEM with tourmaline and ionic technologies does more than just dry hair it transforms airflow into a hydrating spa treatment. Converts heat into penetrating far-infrared energy, drying the cortex (interior) without over-drying the cuticle (exterior). Also helps cleanse hair of odors and impurities. Leaves the cuticle silky, shiny, softer, and less frizzy by breaking water into smaller, easier-to-evaporate droplets. Quiet operation – powerful performance.