Synthrapol works best with HOT water, yes, HOT water, when washing out excess dye, particularly Fiber Reactive Dye. You are getting out the excess
Rainbow Silks : Jacquard Synthrapol 236ml in Chemicals for use with Procion dyes category
Jacquard SYNTHRAPOL detergent 236ml - RDG
Jacquard Synthrapol Prewash and After Wash Liquid detergent for Dyed or Painted Fabrics, Industrial Strength, pH Neutral, 8 fl oz : Health & Household
Professional-Grade Detergent - Jacquard Synthrapol is a professional-grade detergent that is perfect for pre-washing and dye fixative for fabric
Jacquard Synthrapol Prewash and After Wash Liquid detergent for Dyed or Painted Fabrics, Industrial Strength, pH Neutral, 8 fl oz
250 ml Synthrapol-Metapex specialized dye rinsing liquid
Jacquard Products — Jacquard Products - Chemicals - Synthrapol
Jacquard Synthrapol 8 oz
Orvus Delacate Fabric Wash
Jacquard Products — Jacquard Products - Chemicals - Synthrapol
Synthrapol Dye Detergent 4 oz.