Use Leatherique Prestine Clean to clean leather after application of Rejuvenator Oil has done its job or as a maintenance cleaner and detailer. After the ph correct proteins and collagens from the Rejuvenator Oil have permeated back into the pours and fibers of the leather, strengthening and nourishing them, the surface may be tacky, sticky, gritty, or have a white haze. This is simply the dirt, grime, air pollution, perspiration, salts and other toxins that have floated out of the leather to the surface