Used as a dietary supplement to treat zinc deficiency and support immune function. Commonly included in lozenges to reduce the duration and severity of the common cold. Employed in dermatology for its astringent and mild antiseptic properties, helping in the treatment of skin conditions like acne and minor wounds. Utilized in the textile industry as a mordant in dyeing processes to improve color fastness. Applied in chemical synthesis as a catalyst or reagent in organic reactions. Also used in some oral care products for its ability to control bad breath by reducing volatile sulfur compounds.