Poly(propylene glycol) is widely used in the production of polyurethane foams, which are essential in manufacturing mattresses, car seats, and insulation materials. Its ability to act as a lubricant makes it valuable in various industrial applications, including metalworking and machinery maintenance. In the pharmaceutical and cosmetic industries, it serves as a solvent, humectant, and carrier agent in creams, lotions, and ointments. Additionally, it is utilized in the food industry as an emulsifier and stabilizer, enhancing the texture and shelf life of products. Its low toxicity and versatility also make it suitable for use in antifreeze formulations and hydraulic fluids.