Synthrapol LF (4 oz. size), low foaming version of Synthrapol SP. This surfactant (concentrated wetting agent) will remove excess dye from hand dyed fabrics; will remove sizing from fabric before dyeing, and can be used in the dye bath for even color. Use Synthrapol to wash hand-dyed fabrics before using them in a garment or quilt, when fabric is already quilted and bleeds into adjacent fabric, or to soak fabric before dyeing. Synthrapol LF is a great alternative for those who own front loading washing machines. This is a Pro Chemical & Dye product; for detailed MSDS sheets, visit www.prochemicalanddye.com.