Eye shapes refer to the various forms and contours of the human eye, which can vary significantly among individuals. Common eye shapes include almond, round, monolid, and hooded. Each shape can influence the appearance of the eyes and how they interact with makeup and other facial features. The shape of the eyes is determined by factors such as genetics and age. For instance, almond eyes are often considered versatile for makeup application, while round eyes may appear larger and more expressive. Understanding eye shapes can help in enhancing one's natural beauty through tailored beauty techniques.