Benzethonium Chloride, USP (BE129) is a synthetic quaternary ammonium salt. This compound is an odorless white solid that is soluble in water. It has surfactant, antiseptic, and anti-infective properties, and it is used as a topical antimicrobial agent in first aid antiseptics. It is also found in cosmetics and toiletries such as mouthwashes, anti-itch ointments, and antibacterial moist towelettes. Due to its structure, Benzethonium Chloride bonds with skin and hair to leave it feeling soft with a powdery after-feel.