Potatoes have the effects of diminishing inflammation, promoting blood circulation, relieving swelling, regulating stomach, invigorating qi and spleen, strengthening body and tonifying kidney, etc. It also contains more trace elements and minerals than ordinary foods, and is a good thing for nutrition and health care, which can be directly applied to the face. The specific operation method is: peel the potato and slice it and stick it on the acne. After the initial coolness disappears, replace it with a new potato slice. After three times, the swelling and pain of acne can be obviously alleviated. This method can also play an anti-inflammatory and detumescence role.