FD&C Blue No. 1, also known as Brilliant Blue FCF, is a synthetic dye commonly used in food, cosmetics, and pharmaceuticals. It is approved by the U.S. Food and Drug Administration (FDA) for use in various products, providing a vibrant blue color. This dye is often found in items like candies, beverages, and baked goods. It is important for manufacturers to adhere to safety guidelines when using FD&C Blue No. 1 to ensure that it meets regulatory standards and is safe for consumption.