Ingredient · E129

Artificial Colors: Red No. 40

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Source
Not animal-derived
Allergen
No
Role in food
Manufacturers add Red No. 40 to give foods a red color. It is commonly …

What it is

Red No. 40, also known as Allura Red AC, is a synthetic red dye. It is derived from petroleum and produced through chemical synthesis.

Why it's used

Manufacturers add Red No. 40 to give foods a red color. It is commonly found in candies, chewing gum, drinks, desserts, and other processed foods.

Health notes

Red No. 40 is an FDA-approved color additive for food. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, including Red 40. JECFA has evaluated Red No. 40 and set an acceptable daily intake. EFSA has also evaluated this dye. Some studies have suggested a possible link between synthetic food dyes, including Red No. 40, and hyperactivity in some children, though the evidence is mixed and not conclusive.

Allergen info

Not a major allergen.

Products containing Artificial Colors: Red No. 40

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.