What happened to black genitals?

Female vulva blackening may be caused by estrogen and progesterone secreted by ovaries after entering puberty. If pregnant, the skin color of vulva will become darker as the level of progesterone continues to increase, which is a normal phenomenon, so don't worry too much. Sexual life is too frequent and long-term friction will also cause vulva blackening. Pigmentation and genetic factors are also the main reasons for female vulva blackening. Show vulva blackening phenomenon, as long as there is no pain, does not belong to the disease, do not need to be treated. Usually pay attention to local hygiene, often wear breathable underwear and pants, can effectively prevent the formation of gynecological diseases.