?MULTIPLE HEAT SETTINGS & MULTI-FUNCTIONAL - Hot air brush comes in 3 adjustable heat-levels for different hair types, high heat for thick hair, low heat for fine hair, flexible setting to lock in your beautiful hairstyle. ? Brush Design: Unique shape gently curved sides for smoothing and round edges for smooth volume and curled ends ? NEGATIVE IONIC TECHNOLOGY - Negative ions saturate the airflow, this helps condition, smooth and make hair shinier, while reducing frizz and static. It prevents over-drying and reduces heat damage, make hair healthier overall. ? Brush Design: Unique shape gently curved sides for smoothing and round edges for smooth volume and curled ends.