Canthaxanthin is widely used as a food colorant, particularly in the aquaculture and poultry industries, to enhance the coloration of fish, shrimp, and egg yolks. It is added to animal feed to achieve the desired red-orange hue in salmon and trout, making them more visually appealing to consumers. In the cosmetic industry, it is utilized in tanning pills and creams to promote a sun-kissed skin tone, though its use in oral tanning products is regulated due to health concerns. Additionally, it serves as an antioxidant in dietary supplements, helping to neutralize free radicals and support overall health. Its stability and vibrant color make it a popular choice in various applications across multiple industries.