The growth of pubic hair in women is mainly the result of the action of sex hormones. Under normal circumstances, girls usually have a small amount of pubic hair appearing on their labia from the age of 12, and the development of pubic hair is basically completed by the age of adulthood, which is around 18. If there is no pubic hair in the vulva area, it is called hairlessness. If the pubic hair does not cover the perineum, the pubic hair is too little. If there is little pubic hair and there is no discomfort, and menstruation and ovulation are normal, this may be physiological and does not require special treatment or therapy. If the original pubic hair is normal, and then gradually lose pubic hair and become less, and also accompanied by female secondary sex characteristics atrophy, this may be caused by endocrine disorders. In this case, you need to go to the hospital to check the sex hormone six items to see if the hormone level is normal. If it is an abnormal secretion of sex hormones, you should find out the cause of the problem and provide targeted treatment, if it is only an endocrine disorder, you can do endocrine regulation treatment. You can also eat more vitamin-rich foods, such as carrots, oranges, celery, etc., which can also promote the growth of pubic hair. Of course, you can also be treated by pubic hair transplantation. The pubic hair is the second sex characteristic of the human body, and if abnormalities are found, they can be treated by the above methods.