Hair color is related to the amount, nature and distribution of melanin in the hair shaft. Gray hair is caused by the reduction or loss of melanin in the hair shaft. Common causes are as follows: 1. Metabolic abnormalities can often cause hair color changes. Hair appears red and brown, yellow, gray and white hair. Less white head can also be caused by a period of time body metabolic abnormality disease. For example, protein and micronutrient deficiencies can lead to malnutrition. In the sixties and seventies of the last century because of the poor standard of living, because of nutritional deficiencies leading to the phenomenon of whiteheads is very common, and later, with the reform and opening up of the people’s standard of living after the improvement of the nutritional status of this part of the people with the nutritional balance, the hair of the symptoms of whiteheads slowly improved or disappeared. Around my side there are many such examples. 2, mental factors or partiality is also an important factor leading to less whiteheads. In recent years, a part of the youth because of addiction to the network or work and rest habits, such as staying up all night, coupled with diet fast food habits, diet imbalance, long-term bad habits lead to a lack of nutrients and micronutrients, caused by the increasing number of patients with less than whiteheads, and even appeared in the children’s less than whiteheads increased phenomenon. Dietary diversity, regular work and rest, peace of mind is the main method of prevention and treatment of less whiteheads. 3, less white head is also related to genetic factors. The family phenomenon of oligopelagic patients shows that this disease is also related to genetic factors.