Long hair can eat animal protein, such as beef, mutton and lean meat. Foods rich in iron, such as beans, fish, shrimp, eggs, spinach and black sesame seeds, fruits and vegetables.

Hair can grow 2-5cm a month, and adult hair is constantly metabolized. The main component of hair is protein. If you want to have long hair, you must have rich protein. In addition, iron is one of the essential elements of human body and one of the main components of blood. Iron deficiency will lead to iron deficiency anemia, lead to the decline of blood oxygen carrying capacity, and then lead to the decline of metabolic rate, which will also affect the growth rate of hair.