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Britannica Sources used in this answer

How is zinc oxide used in paints cosmetics and pharmaceuticals?

Created from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
A labeled diagram of the periodic table entry for zinc, showing its atomic number 30, symbol Zn, atomic weight 65.38, electron configuration, name, hexagonal crystal structure, solid state at room temperature, and classification as a transition metal.
zinc

Zinc oxide (ZnO) is a versatile white solid utilized across several industries due to its unique chemical and physical properties.123

Paints

In the paint industry, zinc oxide serves as a functional additive that enhances the quality and durability of the coating. It acts to toughen the paint film, helps prevent yellowing over time, and provides resistance to mold growth.2

Cosmetics and Pharmaceuticals

In these fields, high-purity pharmaceutical-grade zinc oxide is essential. Its applications include:43
* Ointments and Lotions: It is a common ingredient in topical preparations used to treat various skin conditions.14
* Cosmetics: It is widely incorporated into various cosmetic products.43
* Sunblocks: Due to its protective properties, it is frequently used in sun protection preparations.1

Beyond these specific uses, zinc oxide is valued for its semiconducting and photoconductive properties, which facilitate its application in diverse technologies ranging from photocopying to the production of phosphors for lighting.23