Hair oil is also the reason for self-regulation. 1: It is best to eat less oily and spicy hair. Try to cut your hair short, or tie it up, so it can last for two days. Don't mess with your hair roots. As the previous one said, it's under the ear. 4. See if it is an endocrine problem. Be sure to rest, go to bed early and don't stay up late. Of course, you can't smoke and stay away from bad environment. Especially those who stay up late and have crazy hair.