Actually, a human being takes special care of every part of his body. The color of the private parts of humans is slightly darker. In comparison to the rest of the body parts, the color of the private parts of humans is slightly darker i.e. black. These do not include only private parts. The areas around the private parts like inner thighs and buttocks are also of dark shade.
The color of private parts becomes darker:The part of the body you cover becomes fair. But private parts are those parts of the body which are covered from the beginning, but are still black.
The main reason why private parts remain constantly moist is sweating. Sweating occurs to maintain body temperature and remove waste. There would hardly be any person who would clean the sweat on his private parts again and again.
Main points:
Hormonal Changes: Changes in estrogen levels with puberty, pregnancy, and aging can cause skin color to darken.
Melanin: An excess of this pigment makes certain parts of the body more pigmented (darker).
Friction: Tight clothing or the rubbing of the thighs together can cause the skin in that area to thicken and darken.
General point: This is not a health problem, it is a natural physiological process.