Only used a handful of times. All of the features work like new. Has been cleaned and sanitized. From Website: Hair Type: Straight, Wavy, and Curly Hair Texture: Fine, Medium, and Thick Hair Concerns: - Frizz - Shine - Straightening and Smoothing Key Benefits: - Ceramic base and heated bristles emit far-infrared heat to lock in moisture - Negative ion generator delivers smooth and shiny results - Flexible outer teeth deliver good grip for easy blowouts What Else You Need to Know: This multitasking, two-in-one blow dryer straightening brush has three settings (blow-dryer, thermal brush, and combo) so you can customize your style. The easy-to-use tool styles hair three-times faster, leaves hair smoother and shinier, and reduces frizz for hair that is as smooth as a double agent. The blow-dryer setting is used to dry damp hair or to retouch your blowout. The combo blow-dryer and thermal straightening brush dries damp hair while simultaneously straightening into a smooth and sleek style. The thermal straightening brush setting is for dry hair only to straighten or touch up a blowout. Clinical Results: In a clinical study, results included: - Styles hair 3x faster comparedto competitor 1000W dryer and thermal brush - Hair is 2x smoother and 1.7x shinier than air-dried hair - Clinically shown to reduces frizz by 30%