LILY’S LONG LOCKS

IDEAL hair length is determined by something hairdressers have dubbed the ‘2.25-inch rule’. Place a rule vertically under the lowest point of your ear lobe. Then place a pencil horizontally under your chin, so the end of the pencil crosses the ruler. If the pencil crosses the ruler at less than 2.25cm, you should wear your hair short. If it’s more, wear it long. This takes into account the proportions, shape and angles of the face. A 2004 study in Human Nature journal found long hair is seen as more attractive, as it represents a woman’s genetic code. With her glossy mane, actress Lily James has the scientifically endorsed ‘perfect’ hair.