Multipurpose Rust Cleaning, Metal Door And Window Cleaning Rust Remover Screws Bolt Loosening Rust Remover ConverterOur car rust spray contains inorganic acids and corrosion inhibitors. It can form a dense protective film to prevent the stain from being reoxidized for a long time. Its use method is very simple: 1. Spray the product on the parts that need to be constructed. 2. You can use a toothbrush to promote the dissolution of the oxide layer. 3. Rinse with clean water. 4. Dry with a towel. And has a neutral and mild formula, does not cause skin irritation.