Thinking of colouring your hair to try a new look or to conceal grey strands? If you are a first-timer you need to know a few basics about hair colouring before you go ahead with it. We answer all your common concerns in this hair colouring guide. How safe is it to colour your hair Quite obviously hair colouring is a chemical treatment that changes your hair texture and its natural state so it doesn t come without risks. But to ascertain whether it could be potentially harming a visit to a dermatologist is advised especially if you already have