According to InStyle, round faces are best suited by short, heavily-textured haircuts or medium-length cuts that have a few layers around the edges. Since oval face shapes are considered ideal, people with this face shape can wear just about any cut, says Allure.
Heart-shaped faces often look fuller through the chin with a cut that creates volume at the jaw line. Similarly, square faces look softer with a cut that's directed toward the face. A cut that creates volume at the root of the hair also works well for this face shape. The goal of any cut is to make the face appear more oval.