Blue 2
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What it is
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.
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.
Products containing Blue 2
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Mars Chocolate North America LLC
Peanuts Made With Real Milk Chocolate, Chocolate Candies.
High in saturated fat — 25% DV per serving
507kcal
10.1Protein
26.4Fat
60.9Carbs
Mars Chocolate North America LLC
Minis, Milk Chocolate Candies
High in saturated fat — 35% DV per serving
498kcal
6.0Protein
23.9Fat
67.7Carbs
RAINBOW NERDS
Tiny, Tangy Crunchy Candy
400kcal
0Protein
0Fat
93.3Carbs
Mars Chocolate North America LLC
Milk Chocolate Candies
492kcal
3.8Protein
18.9Fat
72.0Carbs