The left and right sides of the face are quite different. Each side shows different aspects of our personality. First, the left side of the face reveals the instinctive and hereditary aspects of our personality. When we are under stress, for example, with feelings like fear, anger, or even intense happiness, force is put on the muscles of the left side of the face. When we examine the left side of the face, our well-being and troubles show up more. For instance, wrinkles on this side show the strong emotions we have experienced in our lives. On the other hand, the right side of the face reflects our intelligence and self-control. This side of the face is usually more relaxed and smoother. That is why movie stars prefer to have this side of their face photographed.