The unique non detachable oval brush design smooths hair while the rounded edges quickly create volume at the root for beautifully full-bodied bends at the ends in a single pass. The brush is designed with Nylon Pin and Tufted Bristles for detangling, improve volume and control. Styling flexibility is guaranteed with 3 Heat/Speed Settings and a Cool Option. Built to provide just the right amount of heat. Unlike conventional hair dryers, this volumizer can be placed closer to the scalp for lift. Boosted by Ionic Technology through a built-in genuine ION generator, hair dries fast and helps reduce heat damage. The One Step Unit is designed for 120V USA outlets only, we do not recommend use of a voltage adapter or converter, as it will damage the unit. Safety first! The Revlon One-Step Hair Dryer and Volumizer meets U.S. safety requirements and proudly features the ETL Certification seal. Directions: For faster results towel dry hair to remove excess water. Separate hair into manageable sections. Style, Dry & Volumize Your Hair in One Step, Max Drying Power with 30% Less Frizz and helps reduce hair damage. Unique Non-Detachable Oval Brush Design for Smoothing the Hair, while the round edges create volume. Designed with Nylon Pin & Tufted Bristles for detangling, improved volume, and control 3 Heat/Speed Settings with Cool option for styling flexibility. Safety First: The Revlon One Step Hair Dryer and Volumizer meets U.S. safety requirements and features the ETL Certification, unit is designed for 120 Volt USA outlets only. DO NOT use a voltage converter or adapter as it will damage the unit 1100 Watts of Power - Note that wattage of this appliance may vary depending on the location of use Volumizer Care: Clean air inlet regularly, remove hair from the brush after every use and do not wrap cord around the unit. To keep bristles in best condition let unit cool before storing.