Cornstarch is a fine, white powder made from the starchy part of corn kernels. It is commonly used as a thickening agent in cooking and baking, helping to create smooth sauces, soups, and puddings. Cornstarch is also a popular ingredient in many processed foods. In addition to its culinary uses, cornstarch has various applications in other fields. It can be found in cosmetics, as a filler in some medications, and even in industrial products. Due to its absorbent properties, cornstarch is sometimes used in baby powders and as a natural remedy for skin irritations.