L-Cystine is widely used in the food and beverage industry as a nutritional supplement to enhance the protein content in various products. It is often added to fortified foods, dietary supplements, and health drinks to support muscle repair, immune function, and overall wellness. In the cosmetics industry, L-Cystine is incorporated into hair care products like shampoos and conditioners to strengthen hair strands, reduce breakage, and improve hair texture by promoting keratin production. Additionally, it is utilized in skincare formulations for its antioxidant properties, helping to protect the skin from oxidative stress and maintain a youthful appearance. In the pharmaceutical sector, L-Cystine is used in medications and treatments aimed at supporting liver health, detoxification processes, and recovery from certain medical conditions. Its role in promoting the synthesis of glutathione, a key antioxidant in the body, makes it valuable in combating oxidative damage and supporting cellular health.