Apple Wash is a surfactant, cover scent and colored marker for the soft washing process. Apple Wash is designed to be used with the Pro-Portioner.
When mixed with sodium hypochlorite in the cleaning process the color will disappear in 1-3 min depending on the strength of the SH and how much Apple Wash is used. This serves as both a marker for the application process as well as a built-in timer for dwell time to know when it is ok to rinse the surface.