CSS - Color Stabilizer and Souring Agent:
Pro’s Choice “Color Stabilizer and Souring Agent” is an effective pre and post cleaning treatment to prevent color bleed during cleaning and browning during the drying process when cleaning natural fibers and upholstery.  “CSS” is excellent for the treatment of stain resistant yellowing often caused by high pH cleaners.

Dilution: Up to 16 oz. to one gallon water
pH at dilution: 3
Container Sizes: Gallon
Form: Liquid