Dyson Airstrait Straightener The Dyson Airstrait™ dries and straightens hair simultaneously. Take hair from wet to finished look – with one machine. No hot plates. No heat damage¹. Display and Features Style from wet: Straighten and dry hair – at the same time. Three pre-set temperatures – 175°F, 230°F and 285°F – to take your hair from wet to finished style, with one machine. Refresh from dry: Touch-up or refresh your style from dry.