Lake Blue 2
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What it is
Lake Blue 2 is a color additive that provides a blue hue. It is the lake form of FD&C Blue No. 2 (Indigotine), meaning it's an insoluble pigment made by precipitating the dye onto an inert base, typically aluminum hydroxide.
Why it's used
Manufacturers use Lake Blue 2 to add blue color to foods, especially those with low moisture content or high fat, where water-soluble dyes might bleed. It is commonly found in chewing gum, candies, and baked goods.
Health notes
Lake Blue 2 is an FDA-approved color additive for use in food. Both the Joint FAO/WHO Expert Committee on Food Additives (JECFA) and the European Food Safety Authority (EFSA) have evaluated Indigotine (Blue 2) and set an acceptable daily intake. In April 2025, the FDA announced a plan to phase out petroleum-based synthetic dyes, which includes Blue 2 and its lakes. Some studies have suggested potential links between synthetic food dyes and hyperactivity in children, though the evidence is mixed, and regulatory bodies generally consider them safe at permitted levels.
Allergen info
Not a major allergen.