DL-Cysteine hydrochloride 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 process and resulting in softer, more uniform baked goods. In the pharmaceutical sector, it serves as a precursor for the synthesis of various drugs and supplements, particularly those aimed at supporting liver function and detoxification processes. Additionally, it is utilized in cosmetic formulations for its antioxidant properties, helping to protect skin from oxidative stress and enhance the stability of beauty products. In biochemical research, it acts as a reducing agent to break disulfide bonds in proteins, facilitating the study of protein structure and function.