The first factor is that the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white, and the hair is not white. Generally, it will be improved after the treatment of the disease; 2, malnutrition: the color of pubic hair is related to the level of nutrition, malnutrition or nutritional imbalance can lead to the color of pubic hair become light, or even white; 3, vulvar lesions: vulvar leukoplakia is the most common, due to the destruction of melanocytes in the hair follicles, which leads to the whitening of the vulvar skin, and at the same time, pubic hairs will also appear white.