Good news for fellow jeans lovers – apparently, you’re meant to wash them way less often than you might think. Consumer advisory publication Which? puts the figure at about six to 10 wears before they’re due a spin in the machine, while the denim giants Levi’s say you should stick to the more “sparing” end at 10 wears, because over-washing denim can damage their shape and colour over time. Anyone who’s owned a beloved pair of black jeans will know how true that is (my favourites have already faded to an unbecoming slate grey). But according to cleaning expert