The color of female vulva is related to heredity and hormone level in the body. When the androgen in the body gradually increases after menstruation, the pubic hair gradually thickens and the color of the labia gradually deepens, which is a normal physiological phenomenon. After childbirth, the hormone level will return to normal and the skin color will change accordingly. If a woman’s vulva color darkens and there are no other uncomfortable symptoms, there is no need to worry too much about improving the color of her private parts by adjusting the hormones in her body.