Used as a cationic surfactant and antimicrobial agent in topical formulations, particularly in skin and hair care products. Its long alkyl chain provides lipophilic properties, enabling it to integrate into lipid bilayers, which enhances skin penetration of active ingredients. Commonly found in antiseptic creams, shampoos, and wound healing preparations due to its ability to disrupt microbial membranes. Also utilized in controlled release systems for transdermal drug delivery because of its capacity to form stable complexes with negatively charged molecules. Exhibits low irritation potential, making it suitable for prolonged use in dermatological applications.