Sodium deoxycholate is widely used in biological research as a detergent to solubilize proteins and lipids, making it valuable for cell lysis and membrane protein extraction. It is also employed in molecular biology techniques, such as DNA and RNA isolation, to disrupt cell membranes and separate nucleic acids. In diagnostic applications, it serves as a component in various assays and buffers to enhance the stability and functionality of biomolecules. Additionally, it is utilized in the pharmaceutical industry as an excipient to improve the solubility and absorption of poorly water-soluble drugs. Its ability to emulsify fats also makes it useful in cosmetic formulations for skin care products.