Calcium Lime Rust

Calcium Lime Rust, more commonly known as CLR, is a household cleaning product used for dissolving stains, such as calcium, lime, and iron oxide deposits.

Its ingredients include water, lactic acid, gluconic acid, lauramine oxide, Propylene Glycol, n-Butyl Ether, and solvents that dissolve cobalt gel coats and paint. The product also contained phosphoric acid at one time, but it is now phosphate-free.