The causes of black skin on buttocks are as follows. Generally speaking, toxins in the body are excreted through the anus, so if the time is too long, melanin will precipitate behind the buttocks. If the buttocks skin is dark and particularly rough, it may also be caused by our sedentary, and the blood circulation of the buttocks will not make the buttocks skin black, so if it is dark, it is necessary to exercise more, which can also be improved. We can eat more vitamin E, which can promote our metabolism, increase capillaries, maintain their permeability, improve the circulation of buttocks and make the skin of buttocks very good. We can eat more foods with vitamin E, such as eggs, sesame seeds and honey, but we can't eat more spicy foods, such as acidic foods and irritating foods. Vitamin C can be properly supplemented, because vitamin C is also an antioxidant, which can not only resist oxidation, but also prevent the precipitation of melanin, such as some apples and tomatoes. These foods can be eaten properly, such as vitamin B6, which can dilute melanin. Black buttocks are caused by sitting for too long, needing proper exercise and not sitting for a long time, which is not conducive to skin recovery. The above is the solution of black ass, which can be adjusted according to the above actions. For example, if the skin of buttocks is too rough, it is necessary to climb the stairs more, because the muscles will be stronger when climbing the stairs, so it is also the time to correct the muscles. Just take two or three steps when you take the stairs. You can stretch the muscles of your hips, but don't be too fast and keep the pain. This kind of exercise is also very effective, but when we exercise outdoors, it is different from the gym and the effect is also very good.