Allura Red AC, also known as Red 40, is a synthetic food dye commonly used to enhance the color of various food products. It is derived from petroleum and is often found in candies, beverages, and processed foods. The dye is popular due to its bright red hue and stability in different conditions. In the United States, Allura Red AC is approved by the Food and Drug Administration (FDA) for use in food and beverages. However, some studies have raised concerns about potential allergic reactions and hyperactivity in children, leading to ongoing discussions about its safety and regulation in food products.