Our pan bottom black scale remover contains disodium EDTA, cocamidopropyl betaine, palm kernel oil amide DEA. It can effectively remove stubborn dirt, prevent rust, extend service life. Its use method is very simple: 1. Before use, gently shake the detergent. 2. Spray the cleaner evenly on the dirt at the bottom of the pan; 3. Wrap two layers of paper towel around the dark skin area and saturate the tissue with stain remover. 4. Wrap the black dirt in plastic wrap and leave for 12-24 hours. 5. After removing the plastic wrap. Scrub black dirt areas. 6. Rinse with water. Effectively remove the black dirt attached to the bottom of the pot and restore the brightness of the bottom of the pot. Suitable for non-stick pan, iron pan, aluminum pan and other materials.