Potato flakes contain a high amount of starch and when used correctly can help reduce skin swelling. This product is rich in potassium, which can promote the body to excrete excess water and thus achieve the effect of reducing swelling. Cut the potato slices into thin slices and put them on the swollen area, the area of the potato slices should be 1-2cm wider than the swollen area, and change them once in 1-2 hours, and the effect can be seen in 2-3 consecutive days. As potato chips to reduce swelling is a folk remedy only for mild swelling, and only within 48 hours of the swelling is effective, more than 48 hours need to be localized hot compresses, rubbing blood circulation, swelling and pain medication, no significant effect on serious swelling with potato chips. It is recommended to go to the hospital for medical treatment according to medical advice. Before the swelling subsides, you should pay attention not to eat spicy food to prevent aggravating the condition.