If your face is full, you may have full cheeks, a double chin, or just larger bone structure, or you have a large or wide neck. The correct hairstyle will help to slim and adjust the proportion of your face to create an eye pleasing symmetry.
You can wear long hair as long as it is at least shoulder length and the silhouette is slim. That usually means layering in the hair cut. Any fullness in the style should be at eye level and above. The hair should lie close to the sides of your face and neck. The layers of this style separate and give a textured appearance and have a lengthening effect. This style is parted at the side. This is slimming to most faces. Keeping the bangs off the forehead with just the ends adding softness also makes the face appear longer.
Short hair may be for you. It can be very feminine and is easy to care for. About an inch of length at the neckline is often attractive and should be left fringy rather than blunt at the bottom.
Keep the style close at the sides. If you cut it short around the ears, make sure it is soft and fringy at the edge.
A side part will have the effect of adding length to the face. The height at the one side adds to that effect.
Now turn around! What does the back of your hair look like? The lines of the back of your hairstyle make a difference in how others see you. Hair that is trimmed evenly straight across the back has the effect of adding width to your neck or to your back. With a hand mirror in hand, turn your back to the wall mirror and look at what other people see. If your hair is long, pull it up- all of it or just pieces to see the effect on your overall appearance. For a slimming effect trim your hair in an oval with the long lengths in the center or in an inverted V with shorter lengths in the center and longer on the sides.