Artificial Colors Blue 2
Auto-generated content. This description was generated automatically and is pending editorial review. Inaccuracies are possible. Found a mistake? Contact us.
What it is
Blue 2, also known as Indigotine, is a synthetic color additive. It is a blue dye produced through chemical synthesis, typically derived from petroleum.
Why it's used
Manufacturers add Blue 2 to foods to give them a blue color. It is commonly found in candies, baked goods, beverages, and other processed foods where a vibrant blue hue is desired.
Health notes
Blue 2 is an FDA-approved food additive for use in the United States. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, including Blue 2. JECFA has evaluated Blue 2 and set an acceptable daily intake. EFSA has also evaluated this additive. Some studies have suggested a possible link between synthetic food dyes and hyperactivity in some children, but the evidence is mixed and not conclusive across all studies.
Allergen info
Not a major allergen.