Why are women’s labia dark?

　　There is no correlation between the size of the labia and the strength of sexual desire, and it is not proportional to the body shape. In fact, the strength of sexual desire not only depends on innate factors, but also the accumulation of acquired experience will also have a great impact. The dark color of the vagina just means that your girlfriend has more melanin in that area. It does not mean "excessive sexual desire" or "natural lewdness".