Our kitchen cleaner contains deionized water, baking soda, and sodium percarbonate. It can penetrate grease and oil stains, soften the black dirt on the bottom of the pot, and loosen and break down the internal structure of the dirt. Its use method is very simple: first of all, evenly apply the cleaner on the black dirt or burn marks, spread a layer of paper towels, coated with the cleaner, wrap the cookware with plastic wrap, 12-24 hours later, tear off the plastic wrap and paper towel, wipe with hot water with a clean rag. After use, it helps to fully dissolve the stubborn black dirt on the bottom of the pot, while keeping various kitchen utensils clean and making POTS and pans bright as new.