One Direction hair guru Lou Teasdale has opened up on how she gets Harry Styles' locks looking so lush.

The singer is well-known for his wild hair and she told the Daily Mail that the trick is to let the star's mane dry naturally.

She said: "The secret to curls is to let them dry naturally…if you need to get ready quickly, invest in a good old 80's diffuser attachment for your hairdryer. Not joking."

Speaking about her favourite One Direction member to style at the moment, Teasdale said:

"My favourite hair at the moment is Louis' because it's got really long and he lets me do fun stuff with it."

One Direction meanwhile are currently out on tour in the UK on their Where We Are stadium jaunt, with their next date taking place at London's Wembley Stadium on Friday (June 6).

Watch One Direction on tour below: