DL-Cysteine·HCl·H2O is widely used in the food industry as a dough conditioner in baking. It helps improve the texture and elasticity of dough, making it easier to handle and resulting in a better final product. In the pharmaceutical sector, it serves as a precursor in the synthesis of various drugs and supplements, particularly those aimed at supporting liver health and detoxification processes. Additionally, it is utilized in cosmetic formulations for its antioxidant properties, helping to protect the skin from oxidative stress and improve overall skin health. Its role as a reducing agent also makes it valuable in biochemical research for breaking disulfide bonds in proteins.