Dura Wash Advanced Wash / Renew Concentrate works with Dura Shine Advanced Auto Polish to renew a show car shine while building added protection against nature's harmful elements. Regular combined use helps maintain an award winning shine with no hand drying. It is specifically formulated to not harm clear coat finishes. Dura Wash is concentrated, only 2 ounces per quart of water, don't let the bottle size fool you, a little goes a long way. Apply whenever vehicle needs cleaning. Dura Shine Advanced Auto Polish is a high luster polish that virtually eliminates water spotting and staining caused by acid rain, pollutants and road grime. It has a unique one step application, just wipe on--hose off with water and you're done. There is no rubbing, buffing or even hand drying. It can be applied anywhere, indoors or outside, in shade or direct sunlight. Dura Shine is safe on all surfaces including vinyl, plastic, rubber or exotic composites like carbon fiber. Apply it as often as every wash or when water beading becomes reduced.