E169 is a food additive known as a colorant, specifically a green pigment derived from copper complexes. It is often used in various food products to enhance their visual appeal, making them more attractive to consumers. E169 is commonly found in items like candies, beverages, and processed foods. This additive is regulated by food safety authorities, ensuring it is safe for consumption within specified limits. E169 is part of a broader category of color additives, which includes other substances like E100 (curcumin) and E120 (cochineal extract), each serving to improve the appearance of food products.