This is why your hair goes grey...

A trichologist answers all your grey-haired questions

Like wrinkles, grey hairs are visible signs of ageing, but can the way you treat your hair keep it youthful in the same way that skin care can? In the light of Kate Middleton's grey roots making headlines once again (in other news, who gives a fuck, and we think she looks amazing), trichologist Madeleine Preston explains why we go grey and whether we can delay it - should we actually wish to.

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