Used as a topical astringent in dermatology and first aid, this compound helps relieve skin irritation, itching, and minor infections. It is commonly applied in wet dressings or soaks for conditions like eczema, poison ivy, and minor wounds. Its astringent properties promote tissue contraction, reduce inflammation, and assist in drying oozing or weeping skin lesions. Also found in some ear and eye preparations for its soothing and antimicrobial effects. Widely used in over-the-counter skin protectants and antiseptics due to its mild action and low irritation potential.

In the textile industry, it serves as a mordant in dyeing processes to help fix colors more permanently, ensuring better adhesion to fabric fibers and resistance to fading.

Employed in wastewater treatment to precipitate impurities and suspended solids, clarifying water prior to filtration or further processing steps.

Occasionally used in the leather industry during tanning processes to condition proteins in hides, making them more durable and supple.