Guaiacol Glycerol Ether, also known as Guaifenesin, is primarily used in the pharmaceutical industry as an expectorant in cough syrups and cold medications to help loosen and expel mucus from the respiratory tract. It has limited applications in cosmetics as a potential stabilizing agent, though this is not its primary use. It is not commonly employed in the food industry as a flavoring agent, as its derivatives like guaiacol may impart smoky notes, but the compound itself is mainly pharmaceutical-grade. Its mild antiseptic properties support use in some topical formulations for minor skin irritations, but it is not a standard preservative.