Bio Ionic Bluewave Brush Extra Large Less Slip and More Grip! A breakthrough in brush design has created a “square-round” barreled brush for one of the most versatile styling tools ever! Natural Ion Complex” to “NanoIonic Mineral” Square-round shaped barrel speeds-up drying time, allowing the user to put more tension on the hair. Square-round barrel can be used for straightening, curls or waves. Incredibly lightweight for all-day styling. Minimize hair breakage and split-ends. Visibly add noticeable luster. Make hair significantly more manageable. Eliminate frizz and fly-aways. Eliminate static electricity. Ergonomic handles make them easy to use.