Nano thermal ceramic ionic technology: Our round brush will add endless shine and blaze on your hair every time you use. Enhance the looks of your hair, improve texture and reduce brittle hair and split ends! It helps reduce frizz and add shine. Cuticles are sealed, producing a smooth, soft texture from roots to ends. It creates loose curls and waves in medium to long hair and helps straighten and add volume to shorter and medium styles. With boar bristle: Human scalp naturally produces oil called sebum which acts as a protector for hair. The boar bristles help to spread this sebum around to lubricate each of your hair strands which reduces frizz. For Smooth Finishing and Quick Drying. Enhances Shine with Natural Boar Bristles. 1.75 inch Round barrel: Large round shape creates volume and curl shine with natural boar bristles. Anti-static, anti-bacterial. Vented ceramic barrel helps heats up faster and retains heat longer, highly heat resistant; Extra large vents in the barrel great for airflow, which reduces drying time,adds more shine while eliminating frizz and flyaways. Perfect for medium-long hair drying and styling. Ergonomic handle design, comfortable and non slip: No more slippery handles, no more hand fatigue. Our round barrel thermal hair brush is equipped with an ergonomic and humanized palm shape handle. Its anti-slip rubber design ensures easy and hassle free use! 12 months guarantee: If there are any problem with our Boar Bristle Hair Brush, return it, and we'll give 100% of your money back.