Synthetic dyes, once regarded as harmless ingredients that simply made foods more visually appealing and marketable, are now the subject of a dynamic bipartisan movement for reform. Thousands of food items in grocery stores in the United States utilize synthetic dyes, which have been linked to potential health risks, including behavioral effects in children and carcinogenicity in animal tests. One of these items, Red Dye No. 3—which is commonly used in candy and cereal—has been identified as carcinogenic by the FDA based on rat studies. Abroad, the EU mandates warning labels, while Australia and Japan restrict or ban them.