Our shoe decontamination foam spray contains citric acid, sodium carbonate, and disodium EDTA. It can be especially for yellow stains, sweat stains, oil stains, handwriting and other stubborn stains, effectively restore the whiteness of shoes. Its use method is very simple: 1. Spray the stain remover evenly on the stain that needs to be cleaned. 2. Scrub the stained area repeatedly after spraying foam. 3. After scrubbing. Use a dry towel to dry the remaining water, then place the shoes in a ventilated place to dry naturally. Powerful cleaning formula that easily removes stains and grime. Produces rich foam, full coverage, deep cleaning.