Zep Spectra-Shine Blue Foam Polish is an economical, concentrated, high-foaming vehicle polish designed for professional car wash operations. As one of three products in the Spectra-Shine Foam Polish System, it produces a rich blue foam when applied through air-injected foam-generation equipment at concentrations as low as 1/3 oz per gallon (1:400). The stable foam provides clear visual application coverage while preparing vehicle surfaces for sealers or protectants in polish wax systems.