Which food colouring contained the banned food dye?

The banned food dye commonly referred to is Red 2 (also known as Amaranth), which was prohibited in several countries, including the United States, due to concerns over its potential health risks. This dye was often used in various food products, including candies, baked goods, and beverages. Its ban was primarily due to links to allergic reactions and possible carcinogenic effects. Always check ingredient labels for specific dyes, as formulations can change over time.