Butt black factor may be caused by long-term sedentary and friction, due to individual differences, the treatment effect is different, there is no most effective way to remove the most effective, only suitable for their own condition of the treatment method is the most effective, to remove the buttocks on the black black marks can be improved by applying drugs externally and changing lifestyle habits. 1. Apply medication externally: Apply mucopolysaccharides polysulfate cream, hydroquinone cream cream and other medications that have a certain effect of lightening the black marks on the place where there are black marks. 2. Change habits: black marks on the buttocks, generally due to long-term sedentary, local skin friction, resulting in skin thickening, pigmentation, it is recommended that every hour or so to get up and move for half an hour, to avoid long-term sedentary. Butt black black marks, in addition to the above two ways to improve, you can also eat more food rich in vitamin C, accelerate the skin metabolism, such as the symptoms are always not relieved, it is recommended to go to the regular hospital for a detailed examination.