Coloring Includes Blue 1 Lake

Blue 1 Lake is a synthetic color additive used to give foods a blue hue. It is made by combining the dye Blue 1 (also known as Brilliant Blue FCF) with an insoluble base, usually aluminum hydroxide. This process creates a pigment that is more stable and oil-dispersible than the dye form.

Manufacturers add Blue 1 Lake to foods to provide a bright blue color. Because it is a "lake" pigment, it is often used in products with low moisture content, fats, or oils, where it helps prevent the color from bleeding. It is commonly found in candies, baked goods, snacks, and dairy products.

Blue 1 Lake 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 1. JECFA and EFSA have both evaluated Brilliant Blue FCF (Blue 1). Some studies have suggested a link between synthetic food dyes, including Blue 1, and hyperactivity in some sensitive children; however, the evidence is mixed, and regulatory bodies have differing conclusions on the significance of these findings at typical intake levels.