Preservative And Red 40
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What it is
A "preservative" is a substance added to food to prevent or slow down spoilage caused by microbial growth or undesirable chemical changes. Red 40, also known as Allura Red AC, is a synthetic color additive made from petroleum. It is one of the most commonly used artificial red dyes in the United States.
Why it's used
Preservatives are used to extend the shelf life of many packaged foods, stopping the growth of bacteria, yeasts, and molds, and keeping food fresh. Red 40 is added to foods and drinks to give them a bright red color, often found in sodas, candies, cereals, and baked goods.
Health notes
Many preservatives are approved by the FDA for use in food, and their safety is regularly checked. Red 40 is an FDA-approved color additive. In April 2025, the FDA announced a plan to gradually remove petroleum-based synthetic dyes, including Red 40, from the food supply. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) and the European Food Safety Authority (EFSA) have looked at Red 40 and set an acceptable daily intake. Some research has looked into a possible link between synthetic food dyes, like Red 40, and hyperactivity in some children, but the scientific evidence on this topic is mixed.
Allergen info
Neither Red 40 nor common food preservatives are considered major allergens by the FDA. Not a major allergen.