Polyoxyethylene (20) stearyl ether is widely used as a nonionic surfactant in various industries due to its emulsifying, dispersing, and stabilizing properties. In the cosmetics and personal care sector, it is commonly found in creams, lotions, and hair care products, where it helps to blend oil and water-based ingredients, improving texture and consistency. It also acts as a cleansing agent in shampoos and body washes, effectively removing dirt and oils without causing excessive irritation.

In the pharmaceutical industry, it is utilized as an excipient in formulations such as ointments, emulsions, and suspensions to enhance drug delivery and stability. Its ability to solubilize active ingredients makes it valuable in improving the bioavailability of certain drugs.

Additionally, it is employed in household and industrial cleaning products as a wetting agent and detergent, aiding in the removal of grease and stains from surfaces. Its versatility and mildness make it a preferred ingredient in applications requiring effective yet gentle performance.