Nikwax Tech Wash is a non-detergent cleaning solution for technical hardshell and softshell performance outerwear. Safely cleans technical synthetic outerwear, without degrading existing DWR. Enhances the performance of Nikwax waterproofing treatments. Prolongs the effective life-span of technical outerwear. 100% Water based and Biodegradeable. Contains NO flourocarbons/VOCs. Nikwax..Easier, Safer, Drier.