If you are a fashionista, you can have long hair around the age of 16-28, and both sides should be docile, the top of your head should be fluffy, and the back should be fluffy, so that you can lengthen your face, not be so wide and have a solid sense of outline. Don't make bangs too long, it will make your face shorter. You can also have short hair and stick it on both sides like long hair. Be careful that the hair on the top of your head doesn't cling to your scalp.

If you are a 22-35 self-image worker, you can cut your hair short and have a sense of fashion. Don't be too wide or fluffy on both sides of your hair, it will make your face bigger.

In any case, try not to shave a flat head, and don't shave an inch (that is, an ultra-short hairstyle with hair extending to the whole head). Although very masculine, it will not modify your face at all. If you want to show masculinity, you can choose to shave it locally or safely.