Blue 2
What is Blue 2?
Blue 2, also known as Indigotine or Indigo Carmine, is a synthetic blue food dye. It is produced through chemical synthesis, typically from petroleum-based raw materials.
Is Blue 2 vegan?
Blue 2 is not animal-derived. Products that contain it can still include other animal-derived ingredients, so check the full ingredient list.
Is Blue 2 a major allergen?
Blue 2 is not a major allergen.
What is Blue 2 used for?
Manufacturers add Blue 2 to provide a blue color to various food products.
Is Blue 2 safe?
Blue 2 is an FDA-approved color additive for use in food.
Why it's used
Manufacturers add Blue 2 to provide a blue color to various food products. It is commonly found in candies, cookies, baked goods, and other processed foods to enhance their visual appeal.
Health notes
Blue 2 is an FDA-approved color additive for use in food. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, including Blue 2. Both JECFA and EFSA have evaluated Blue 2 and set an acceptable daily intake. While some research has explored potential links between synthetic food dyes and hyperactivity in children, the evidence is mixed and not conclusive.
Allergen info
Blue 2 is not a major allergen.
Foods that contain Blue 2
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