Triethanolamine borate is widely used as a corrosion inhibitor in metalworking fluids, protecting metal surfaces from rust and degradation during machining or storage. It also serves as a stabilizer in hydraulic fluids, enhancing their performance and longevity. In the textile industry, it acts as a flame retardant, improving the fire resistance of fabrics. Additionally, it is utilized in the production of lubricants, where it reduces friction and wear in mechanical systems. Its application extends to the cosmetics industry, where it functions as an emulsifier and pH adjuster in skincare products.