What it is: Dyson's latest technology hides flyaways in one pass, for a smooth, shiny finish.* With just air. What it does: Inspired by professional stylists, the new Flyaway Attachment harnesses the Coanda effect to lift longer hairs and hide flyaways. Giving you a smooth, salon finish*, at home. The ideal finishing tool for sleek, straight styles. Hides flyaways under longer hair to give you a smooth, shiny finish*. It's compatible with any Dyson Supersonic™ (sold separately).