The Dyson Flyaway Attachment (£30) is a new attachment for the brand's Supersonic Hair Dryer that promises to give you salon-quality blowouts at home by smoothing and controlling flyaways. To do that, the attachment uses the Coanda effect — the phenomenon in which high-velocity air in round objects turns into a powerful vortex (the secret behind how jet engines work). It's the same technology used in the Dyson Airwrap, but whilst the Airwrap uses the Coanda effect to wrap the hair around a barrel, the airflow created by the Flyaway Attachment attracts and lifts longer hair to the front as a second jet pushes the shorter flyaway strands down through the longer hairs and out of sight. The result? Your hair has a glossy, uniform finish with no frizz or fuzz (you can read our full review of the attachment here). The attachment sold out in one day, but you can sign up for an alert on the Dyson website for when it's back in stock.