WHAT IT IS Olivia Garden Rose Gold NanoThermic Thermal Brush 1 1 4 is a round thermal brush. WHAT IT DOES Olivia Garden Rose Gold NanoThermic Thermal Brush 1 1 4 provides anti-bacterial protection leaving hair healthier and easier to style. It has an easy-grip ergonomic handle and special wavy heat resistant bristles. It s soft-tip is gentle on hair and scalp.