Diethylene glycol is widely used as a solvent in various industries, particularly in the production of resins, plastics, and adhesives. It acts as a key component in the formulation of polyurethanes and unsaturated polyester resins, enhancing their flexibility and durability. In the textile industry, it serves as a humectant and softening agent, improving the texture and moisture retention of fabrics. Additionally, it is employed as a coolant and antifreeze in industrial systems due to its ability to lower the freezing point of water. Diethylene glycol is also utilized in the manufacturing of printing inks, helping to control viscosity and drying time. In the personal care and cosmetics sector, it functions as a solvent and stabilizer in products like lotions and creams. Its hygroscopic properties make it suitable for use in dehumidifying agents and as a dehydrating agent in natural gas processing. However, its use in food and pharmaceuticals is strictly regulated due to potential health risks.