There is no scientific research to prove that one white hair grows ten, and one white hair grows ten is usually a popular saying among the people. However, violent plucking of white hair is likely to damage the roots of the hair, destroy the normal growth environment of the scalp, and in serious cases may even cause inflammation of the scalp, so it is not recommended to pluck white hair at will. If you can’t tolerate the presence of white hair, you can cut it off at the root with scissors. The main reason for the appearance of gray hair is that the melanocytes in the hair follicles have a reduced ability to produce melanin, resulting in a decrease in the number of melanin vesicles or even their disappearance, without which the hair becomes white. A variety of causes can cause melanin reduction and metabolic disorders, such as natural aging, genetic inheritance, psychosomatic, malnutrition, infectious diseases, chronic local focal inflammation, endocrine abnormalities and other factors. In order to prevent or reduce gray hair, it is recommended to eat foods rich in copper and iron, such as animal liver, chicken, sea cucumber, spinach, tomatoes, soybeans, melon seeds, etc.; black beans and black sesame can also be eaten in moderation, black sesame is rich in pantothenic acid, which can promote melanin production. The white hair caused by diseases and other reasons, it is recommended to go to the hospital, the original disease for treatment, and then improve the phenomenon of white hair.