E129, also known as Allura Red AC, is a synthetic food dye commonly used to add a red color to various food products. It is often found in candies, beverages, and processed foods. This dye is derived from petroleum and is known for its bright, vibrant hue. In many countries, including those in the European Union, E129 is regulated and must be labeled on food packaging. Some consumers may have concerns about potential allergic reactions or hyperactivity in children associated with artificial colorings, leading to ongoing discussions about the safety and use of such additives in the food industry.