Grey hair used to be something women avoided. Now – thanks to the likes of Kristen McMenamy and British Vogue’s own Sarah Harris – it’s a look they aspire to. But it’s important to do your research before jumping on this particular trend. Which shade of silver will suit you best? Can you avoid using bleach? And how intensive will the upkeep be? Vogue answers all of these questions and more in its ultimate guide to grey hair below.