1, brush it with transparent soap, then brush it with toothpaste, wash it, and then wrap the shoes with toilet paper. Let the cloth be wrapped in white paper towels and put in a ventilated place. Don't expose yourself to the sun, it will be clean and won't turn yellow. It will be difficult to clean after a long period of accumulation, and patient washing can still play a role in desalination.
2. Take a proper amount of laundry detergent, smear it on the stain or soak it for 5 ~ 10 minutes, and then clean it with a small brush.
3. Soak your shoes in warm water, and it won't take long ~ just soak them in water. If possible, put a little vinegar in it and brush it with a soft brush with soap.
Warm reminder: For white shoes or shoes with lighter colors, if soapy water or washing powder water is needed, be sure to soak the shoes in clear water for a period of time after brushing, and then take them out to dry. Just put one or two layers of toilet paper on the vamp when drying, which can absorb the soap that makes the shoes yellow.
I hope my answer can help you.