Ingredient · Updated October 2026

FD&C Blue #1

Flagged in 2

Found in 2 products

Dymatize ISO100 Hydrolyzed Whey Protein Fruity Pebbles

Electrolit Electrolyte Drink Grape Bottle

What is FD&C Blue #1?

FD&C Blue #1 is a synthetic dye used to impart a blue color to foods, beverages, and cosmetics. It is produced from petroleum through a complex process of acidic intermediates and is often combined with other dyes to achieve various shades.

This colorant is widely used because of its stability under heat and light, making it a reliable choice for manufacturers. While it is approved by the FDA, some studies have raised questions about potential allergic reactions, though these concerns are not conclusive. Like many synthetic additives, it can be a topic of debate among consumers.

Consumers often see this dye on labels in candies, beverages, and cosmetics. Those with specific dye sensitivities should pay attention to its presence in products.

Commonly found in: candies, soft drinks, ice cream, baked goods, cosmetics

What to watch

Some individuals may experience allergic reactions, particularly those with asthma or aspirin sensitivity.
In rare cases, FD&C Blue #1 has been associated with hyperactivity in children.

FDA

FD&C Blue #1 is approved for use in foods and cosmetics in the U.S. It is on the list of approved color additives provided by the FDA.

Research

Studies show mixed results, with some suggesting potential allergic reactions but lacking consistent evidence.

Vegan

As a synthetic dye, FD&C Blue #1 is not derived from animals and is considered vegan-friendly.

Sources: Summary of Color Additives for Use in the United States in Foods, Drugs, Cosmetics, and Medical Devices

Scout's take

FD&C Blue 1 is an artificial dye used for coloring. It has been linked to allergic reactions and potential health risks. Its safety is debated due to possible adverse effects.