Think about what you said: unmarried, big and black nipples. Generally speaking, the color depth of a woman's nipple depends on the melanin in her skin. If the skin is fair, the nipple is pink or light. If the skin is dark yellow and the nipples are black, it has nothing to do with sex life.

I suggest you have a small way to make nipples powder: one part honey and three parts flour, which is1; 3, stir into a mask and apply it to the nipple and areola. Wash it off after 15 minutes, apply it with a hot towel for several times, and wipe it with a cotton pad and alkaline emulsion after application. Do it twice a week at most. Generally, after five or six times, it will slowly restore the original bright red color of nipple and areola, but if it is congenital nipple and areola, it will be done about ten times.