Have you ever been interested in the science behind the selfie, perceptions of beauty in the digital age, or the recognisability of stars, whose faces saturate the world? What about how we use our own faces as the primary organ of expression, which makes us who we are? This specialist factual series looks at our greatest defining feature – the face. New science, innovative graphics and personal testimony are drawn upon to reveal the hidden secrets of the human face. In the first episode of the three-part programme, Your Face Says It All asks what your face reveals about intelligence, sexuality, and aggression.