Glass Gleam 4, or GG4, is a professional window cleaning soap that has many benefits including: better results, kindness to hands, almost no bleed-back, drag reduction, perfect foam, nice smell, consistent formula, and lots more. This works well in areas with hard water. One gallon of GG4 makes 512 gallons. Use more than directed for dirty windows and less for lightly soiled windows. Special dispensing bottles are available for the perfect dispensing.
