A nozzle for attachment to a hair dryer includes a body and an airflow guiding member. The body has an internal surface which defines an airflow duct which extends from an air inlet end for receiving an airflow to a slot-shaped air outlet end of the body. The internal surface has opposing first surface sections which taper inwardly towards the air outlet end, and opposing second surface sections which taper outwardly towards the air outlet end. The airflow guiding member guides a first portion of a received airflow towards one of the second surface sections, and a second portion of the received airflow towards the other of the second surface sections.