To clean aluminum foil facing after use, first let it cool down to avoid burns. Then, gently scrape off any food residue with a spatula or the edge of a knife. For stubborn stains, mix a solution of warm water and dish soap, and wipe the surface with a soft cloth or sponge. Rinse with clean water and dry thoroughly. For baked-on food, you can use a plastic scraper or an old toothbrush to gently remove it. Avoid using abrasive materials that could scratch the surface. Regular cleaning will help maintain the integrity and appearance of your aluminum foil facing.