Acid-PEG6-acid is a versatile polyethylene glycol derivative widely used across multiple industries. In personal care and cosmetics, particularly skincare and haircare products, it functions as a mild surfactant and emulsifier, stabilizing oil-in-water emulsions to create smooth lotions, creams, and shampoos. It enhances product spreadability, improves texture for a luxurious feel, and is suitable for sensitive skin formulations due to its low irritation potential. Additionally, it is employed in the synthesis of biodegradable polymers for cosmeceuticals, where it contributes moisturizing and skin-conditioning properties in items like creams, serums, and lotions. In pharmaceuticals, it serves as a linker in nano drug delivery systems, improving drug solubility and absorption efficiency. Beyond these, it finds use in industrial cleaning agents for effective grease and dirt removal.