Hexadecyl trimethyl ammonium bromide (CTAB) is widely used as a cationic surfactant in various applications. In molecular biology, it is essential for the isolation of DNA from plant and bacterial cells, as it helps break down cell membranes and release nucleic acids. In nanotechnology, CTAB serves as a stabilizing agent in the synthesis of gold and silver nanoparticles, controlling their size and shape. It is also employed in the formulation of hair conditioners and fabric softeners, where its cationic properties help reduce static and improve texture. Additionally, CTAB is used in the petroleum industry as a corrosion inhibitor and in the preparation of disinfectants due to its antimicrobial properties. Its versatility makes it a valuable compound across multiple fields.