Full catwalk looks, skipping check-in queues at airports, tax evasion: famous people can get away with a lot that us mere mortals can’t, and edgy haircuts are no exception. Except that you can pull off an unconventional coif with the aid of the right advice and products, and without attracting the opprobrium of the fashion press, fellow passengers or the tax man. Here Denis Robinson, artistic director of award-winning barbers Ruffians, which has four locations in London and one in Edinburgh, details why these five treacherous celeb styles shouldn’t have worked, why they did against all logic and how they can work for you too. Heed his words and they’ll be hairdos, not don’ts. Just spare a thought for us when you’re flying through the terminal in an off-runway outfit en route to the Cayman Islands.

Alex Turner’s Rockabilly

With his retro greaser quiff, the ice-cool Arctic Monkeys frontman could easily have looked like a right melt. “Going with a style that has such classic roots can be dangerous as it always runs the risk of just coming over as dated,” says Robinson. Turner has successfully rocked short and long versions but they’re essentially the same cut. “It’s basically uniform layers throughout,” says Robinson. “The actual look comes from the styling.” To groom yourself like a Monkey, towel dry your hair well after washing and apply a volumising product like mousse or styling spray. Then dry about 70 per cent with a hair dryer: “This is essentially to get a little root lift, so concentrate the dryer there.” Finally, you’ll need a product or two. “Personally, I would mix styling paste and pomade,” says Robinson. “The paste will add thickness, density and thereby hold, while the pomade will add the classic shine.” You’re ready to roll into the Tranquility Base Casino, or to play online slots at Wizard Slots at home, if you’re broke after the styling paste and pomade.