This glossy hair-hagiography has the geometric style and swish of the iconic haircuts from the world’s most famous crimper, snipping archive footage to show his rise from East End orphanage boy to swinging ’60s mover and shaker.

A celebration rather than a conventional documentary, its laudatory tone does wear thin – one interviewee even compares him to Einstein.

The breathless account of Sassoon’s ’80s stint as hair-product mogul would have benefited from some Septemb🌟er Issue-style detachment, and ironically, the whole film could do with a good trim.