How do I prevent aluminum foil facing from curling up after use?

To prevent aluminum foil facing from curling up after use, consider the following tips: 1. Ensure the foil is cut straight and even to reduce the likelihood of curling. 2. Use a light coating of cooking spray or oil on the foil to help it lay flat. 3. Apply a thin layer of flour or cornstarch to the foil before placing food on it; this can help it adhere better. 4. Use a piece of parchment paper between the food and the foil to prevent direct contact and reduce curling. 5. Keep the foil taut and smooth before placing it in the oven or on the countertop. 6. If using in the oven, ensure even heat distribution to avoid hot spots that could cause the foil to curl. Regularly check and adjust the foil as needed to maintain its flatness.