Ageing may be one of life’s inevitabilities, but gone are the days when men were expected to adopt a laissez-faire, hands-off approach and simply let nature run its course. Now, the overwhelming consensus is that if you’re planning to age exquisitely – like a full-bodied red or a Mr Paul Rudd – you’ll have to lay down an investment. Those who frequent The Journal will (we hope) be well aware of the long-term merits of daily sun-protection, skin-sloughing acids and retinol. But for that glowing, smooth complexion that seems to defy one’s date of birth? Well, you’ll have to go beneath the surface.