HydroClean 525 is a cleaning agent for facades and floors made of concrete or cement based materials. Surfaces cleaned with HydroClean 525 will be additional hardened and tempered. This additional benefit makes surfaces more stable and better in just one working step. HydroClean 525 is not suitable for marble, chalky stones and shouldn´t be used on paint or lacquer. Concrete surfaces soiled with oil or grease should be cleaned with HydroClean 527. For the removal of grease and oil on glass and clinker, use Borox Reiniger 1043.