Attach the diffuser head to the end of your blowdryer nozzle and twist until it secures. Turn on dryer and place over a section of your curls. Move the diffuser gently over your head while drying, hovering over each section until both your roots and ends are fully dry. To attach the Defining Curl or Volumizing Curl attachments, line up the raised latch under the button of the diffuser head and insert until it snaps into place. Simply press the release button to remove each attachment as needed.