A few gray hairs in the privacy part may be a normal phenomenon due to old age, there may also be due to vitiligo, premature ovarian failure and other diseases. 1. Physiological factors: when a person is old and begins to age, the skin of the whole body will appear wrinkles, age spots and other changes, and pubic hair as a skin appendage, there will also be a whitening of the performance of the normal phenomenon that is caused by aging. 2. Vitiligo: Vitiligo is a skin and mucous membrane disease caused by acquired pigment loss, the patients of this disease can appear privacy hairs have a few white performance, in addition, the patient’s skin, hair can also appear the symptoms of pigment loss. 3. Premature ovarian failure: Premature ovarian failure is a disease in which women before the age of 40 experience a loss of normal ovarian function, and patients with this disease may also experience the symptoms of a few whitish hairs in the private area, in addition, patients may experience premature amenorrhea, hot flashes, and sweating profusely at night in their sleep, and other symptoms. After eliminating the physiological factors, if the symptom of whitening of private hairs persists, it is recommended to consult a doctor in time to find out the cause and standardize the treatment under the guidance of the doctor.