Duragloss Marine & RV Wash Concentrate is a superior blend of specialty formulated surfactants that "Shines As It Cleans". Duragloss Wash Concentrate is tough on dirt and easy on fiberglass, paint and gelcoat. Marine & RV Wash Concentrate easily removes tar, oil and gas film, etc. while leaving a polished look between washes. If you are a fellow boater or RV'er, you know that thorough cleaning is essential on a regular basis to keep gunk from accumulating. Duragloss Marine & RV Wash Concentrate is a non-streaking, cost-effective wash that gently cleans and shines gelcoated fiberglass to maintain its value and beauty. Washing with Marine & RV Wash Concentrate will not strip durable waxes or sealants. The non-streaking, non-spotting formula rinses clean and decreases drying time because water sheets off.