Fd & C Yellow No. 6 And Fd & C Red No. 40

FD&C Yellow No. 6 (Sunset Yellow FCF) and FD&C Red No. 40 (Allura Red AC) are synthetic color additives. They are petroleum-based dyes created through chemical synthesis to provide specific, consistent colors to foods and beverages.

These dyes are added to foods and drinks solely to impart or enhance color, making products more visually appealing. They are frequently found in a wide range of processed foods, including snacks like chips and pretzels, beverages, sauces such as ketchup and mustard, and dessert items.

Both FD&C Yellow No. 6 and Red No. 40 are approved by the FDA for use as color additives in food. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, which includes Red 40 and Yellow 6. Some studies have suggested a link between synthetic food dyes, including these, and hyperactivity in some children; however, the evidence is mixed. The FDA states that the available scientific evidence does not establish a causal link for the general population, though they acknowledge that some children may be sensitive. Both dyes have been evaluated by the Joint FAO/WHO Expert Committee on Food Additives (JECFA) and the European Food Safety Authority (EFSA).