They are like Norland Nannies and Barbours and Land Rovers: stodgy to some; essentially reassuring, beyond the call of duty and — quietly — terribly glamorous to others. Kind to the scalp, they brush hair to an old-fashioned, floating sheen. Excellent for both backcombing and smoothing-over, they can bash out the white left by a squirt of dry shampoo, remove last night’s Elnett and tackle a matted clump without tears.