Why is my vagina so dark - grey color? I am very worried and would like to know how I can lighten it. (Photos)

Pigmentation of the genitals in both men and women. The genital skin is very thin and its pigmentation is highly influenced by dihydrotestosterone (DHT). There are normal variations in the pigment of labia depending on genetic factors of melanin and sensitivity to DHT. Sometimes during pregnancy or other hormonal changes, the color can change and this is not generally something to be concerned about.