Some of us pull grey hairs out the moment we spot them, whereas others dash down to the store to find the appropriate hair dye. But the fact is that the process of going grey is a natural one and it usually comes with age. That said, there’s no guarantee of when it might happen. What’s important to understand, however, is what grey hairs are and why we get them. Following that, we’ll provide you with some top tips on maintaining your hair colour for longer.