Who do Marc Jacobs, Rick Owens, and Maison Margiela’s John Galliano—for starters—call on when they want the hair looks at their shows to not only match their unfettered creativity, but allow it to soar even higher? Duffy, who has given us some of the most major, major hair looks of recent times, from Russ Meyer-meets-society-swans mega bouffants (Jacobs) to Brassai-era Marcel waves as if drenched in Paris rain (Margiela). Making a rare appearance to talk about his work, the British stylist takes Arden Fanning and Margaux Anbouba through some of the most groundbreaking moments of his illustrious career.