Details Soft Wash offers professional residential soft washing services. Our soft washing techniques and water based detergents never damage windows and glass. The final step to soft washing a house is the rinse of all windows and glass surfaces. Keeping the windows wet during the cleaning and thoroughly rinsing will typically leave your windows with few streaks. There always exists the possibility of water streaks drying on your windows. These streaks can easily be removed with a moist paper towel because our detergent is water based and safe for all glass surfaces even when it dries..