The causes of white pubic hair include endocrine disorders, albinism, malnutrition, age and so on. 1. endocrine disorders: if the endocrine disorders, at this time due to the imbalance of hormone secretion, resulting in a decrease in melanin production, so the white hair. 2. Albinism: If there is a congenital melanin production disorder, the phenomenon of white hair will also occur. 3. Malnutrition: If a person is chronically malnourished, the hair lacks the nutrients to produce melanin, so white hair will also appear. 4. Age: with the increase of age, the body enzyme effect will gradually decline, melanocyte function decline, and finally lead to the reduction of melanin, so the hair becomes white. There are many other reasons why pubic hair becomes white fast, it is recommended to consult a doctor in time, under the guidance of the doctor’s treatment.