A woman’s lack of body hair may be caused by physiological reasons such as heredity, or it may be caused by low levels of androgens in the body and hypothyroidism. 1. Heredity: when the parents have no body hair or a small amount of hair, resulting in the daughter to appear body hairless phenomenon. 2. Low level of androgen in the body: When women are developing, the level of androgen in the body is low, resulting in the hair follicles in the pubic area not being sensitive enough to androgen, so that the body hair is unable to grow because of the lack of reception of androgen. 3. Hypothyroidism: Hypothyroidism can cause hormonal disorders in the body so that the female body does not grow body hair. Excluding the above factors, can also be considered with the age of small, and the vast majority of women after puberty, due to the body’s hormone growth, pubic hair growth.