Rust inhibitors are chemical compounds that help prevent the formation of rust on metal surfaces. Rust occurs when iron or steel reacts with moisture and oxygen, leading to corrosion. These inhibitors work by creating a protective barrier on the metal, reducing exposure to moisture and oxygen, or by neutralizing corrosive elements. There are various types of rust inhibitors, including oil-based, water-based, and volatile corrosion inhibitors (VCIs). Each type has specific applications, such as in automotive, marine, or industrial settings. Using rust inhibitors can significantly extend the lifespan of metal products and reduce maintenance costs.