White fruits are effective in the treatment of acne because they contain baiyao acid, an important ingredient contained in white fruits. It has a strong function of inhibiting and killing Propionibacterium acnes and Staphylococcus epidermidis, which cause acne. Another component is white fruit lactone, which has some inhibiting effect on inflammatory response. Therefore, for acne caused by bacterial infection and inflammation, white fruit is effective. Its usage is to crush the white fruit, soak it in 70% alcohol for 1 week, and then filter it to take the liquid and scrub the affected area 2-3 times a day. It can be taken together with white fruit and barley porridge, in which barley has the effect of diuresis and dampness, clearing heat and detoxification; the barley kernel contained has obvious anti-inflammatory and pain-relieving effects, which is more suitable for inflamed and red acne. For acne sufferers, it is also better to take white fruit and barley kernel porridge regularly.