The Revlon One-Step Hair Dryer and Volumizer is a designed to deliver gorgeous volume and brilliant shine in one-step. The unique oval brush design features gently curved sides for smoothing the hair, while the round edges create volume at the roots and beautifully curled ends, resulting in gorgeous salon-like blowouts at home. The brush has tangle-free combination bristles; the nylon pin bristles with comfortable round tips quickly detangle, while the tufted bristles with boar technology gently grip hair to smooth and create shine. Complete with 2 Heat/Speed Settings and a Cool Option for styling flexibility. Boosted by Ionic Technology to help reduce damage and dry hair fast. The One Step Unit is designed for 120V USA outlets only, we do NOT recommend use of a Voltage Converter as it will damage the unit. The Revlon One-Step Hair Dryer and Volumizer meets U.S. safety requirements and proudly features the ETL Certification seal. Need to chat? Our trusted Customer Service Team is waiting to hear from you. Based in the U.S. our team members are on-hand to. The cutting-edge performance of the Original One-Step Hair Dryer and Volumizer is guaranteed through a limited 4-year warranty.