Smooth hair: this dryer dries your hair quickly without making it look dry and frizzy, and keeps your hair smooth. It can maintain collagen in the hair and there are several wind temperatures that can be adjusted. Dual ion outlet: This hair dryer features an innovative dual-ion outlet design that releases blue ions that penetrate the closed cuticle layer of the hair and lock in moisture, making the hair soft and supple. MOISTURE LOCK: This hair dryer locks in moisture as it dries your hair, and the hair dryer turns off automatically when the dryer overheats. Quick drying: the innovative blade-shaped fan blade is equipped with a powerful motor that greatly increases the wind speed and air volume and can dry the hair quickly in a short time. Compact and portable: this hair dryer has a compact housing that can be easily packed in a bag, very portable and can be put in a suitcase on business trips.