Red 40 And Blue 2

Red 40 (Allura Red AC) and Blue 2 (Indigotine) are synthetic food dyes. They are derived from petroleum and manufactured through chemical processes.

Manufacturers add these dyes to foods to impart or enhance red and blue colors, respectively. They are commonly found in products like cake mixes, snacks, and cereals.

Both Red 40 and Blue 2 are FDA-approved color additives for use in food. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, which includes Red 40 and Blue 2. Concerns have been raised about a potential link between synthetic food dyes and hyperactivity in some children. The FDA acknowledges that some children may be sensitive to these dyes but states that current evidence does not show a causal link for the general population. JECFA and EFSA have both evaluated Red 40 and Blue 2 and have set acceptable daily intakes for each.