Dodecyltrimethylammonium iodide is widely used as a cationic surfactant in various industrial and laboratory applications. It is particularly effective in emulsifying and stabilizing mixtures in the formulation of personal care products, such as hair conditioners and skin creams, where it helps to improve texture and consistency. In the field of biochemistry, it serves as a key component in cell lysis buffers, aiding in the breakdown of cell membranes for protein extraction and analysis. Additionally, it is utilized in the synthesis of nanoparticles, where it acts as a stabilizing agent to control particle size and prevent aggregation. Its antimicrobial properties also make it suitable for use in disinfectants and sanitizers, providing effective protection against a range of microorganisms.