Zinc sulfate comes as odorless white crystals. Zinc is an essential trace element. It is a component of numerous enzymes and co-factors and plays an important role in metabolism and the proper functioning of the immune system. The sulfate salt of zinc available as is widely used in cosmetics for its antimicrobial and astringent properties. Its high water-solubility makes it easy to formulate in many skincare and personal care products such as cleansers, anti-acne products, or in hair care (e.g. anti-dandruff shampoos, conditioners) and oral care applications (e.g. toothpaste, mouthwash)