Ingredient

Blue 2

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What is Blue 2?

Blue 2, also known as Indigotine, is a synthetic dye commonly used to add blue color to various foods, drinks, and candies. It is produced through a complex series of chemical reactions starting from petroleum-based raw materials.

Blue 2 is favored for its bright hue and stability in acidic environments. While approved for use by many health authorities, some studies have raised questions about its long-term safety, particularly in high doses, leading to regulatory scrutiny in some regions.

When you see Blue 2 on a label, it's worth noting that the dye is primarily used for aesthetic purposes and doesn't add nutritional value. Consumers sensitive to artificial dyes may choose to avoid it.

Commonly found in: candy, beverages, baked goods, desserts

What to watch

Some animal studies have linked Blue 2 to potential allergies and hyperactivity in children.
Concerns exist over potential carcinogenicity, but evidence in humans is not conclusive.

FDA

The FDA approves Blue 2 for use in food, but it has imposed certain usage limits. It is required to be clearly labeled.

Research

Research is mixed; some studies highlight safety at low doses, while others point to potential risks.

Vegan

Blue 2 is a synthetic dye and not derived from animal sources, thus generally considered vegan.

Sources: Color Additive Status List · Food, Drug, and Cosmetic (FD&C) Act