Lake Red 40

Lake Red 40 is a synthetic color additive derived from Red 40 (Allura Red AC). It is a 'lake' pigment, meaning the dye is combined with an insoluble metallic salt, usually aluminum hydroxide. This process makes the color insoluble in water, which is useful for coloring fatty products or coatings.

Manufacturers add Lake Red 40 to provide a red color to foods. Because it is insoluble in water, it is often used in products with fats and oils, or in coatings and dry mixes. You can find it in candies, baked goods, dessert mixes, and chewing gum.

Lake Red 40 is an FDA-approved color additive for food use in the United States. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, which includes Red 40 and its lake forms. JECFA (the Joint FAO/WHO Expert Committee on Food Additives) has evaluated Red 40 and set an acceptable daily intake. Similarly, EFSA (the European Food Safety Authority) has also evaluated Red 40 and set an acceptable daily intake. Some studies have suggested a possible link between artificial food colors, including Red 40, and hyperactivity in some children; however, the evidence is mixed, and the FDA has concluded that for most children, there is no demonstrated link, though a small subset of children with behavioral sensitivities might be affected.