Xanthophyll is a natural pigment found in plants, algae, and certain microorganisms. It is widely used in the food industry as a natural colorant, providing yellow to orange hues in products like beverages, dairy, and baked goods. It is also a key ingredient in dietary supplements, particularly for eye health, due to its role in protecting against oxidative damage in the retina. In aquaculture, xanthophyll is added to fish feed to enhance the pigmentation of salmon and trout, improving their market appeal. Additionally, it is utilized in cosmetics for its antioxidant properties, helping to protect the skin from environmental stressors. Ongoing studies explore its medical applications in preventing eye diseases such as macular degeneration.