This Travel Thermal Round Hair Brush contains a ceramic coated aluminum barrel of VIA Ion + Ceramic to diffuse heat quickly and evenly. This aluminum coating accelerates the drying time as well as eliminates damaging hot spots on the barrel surface. The superior performance of the VIA Ion + Ceramic brush is maximized when used with heat. Your hair is left shinier, smoother and healthier. The slightly raised bristles pull strands gently into the brush, where hair meets bristles, to aid in polishing and smoothing texture.