Rust remover is a detergent used to remove rust on metal, such as bicycles, tanks, bike halls, blades, tools, and machines. The main ingredients include chelating agents, inorganic orthophosphoric acid, phosphoric acid and surfactants, and these products are widely used in various fields, from general households to factories, construction sites, and manufacturing industries. There are liquid type and spray type, and there are also products with tools necessary for rust removal. Neutral ones that do not require neutralization during work are preferred. Rust removal oil is often used together with rust prevention oil after rust removal.