Synthrapol is an industrial strength, pH neutral, liquid detergent used as a pre-wash and after-wash for dyed or painted fabrics and as a wetting agent for fabric dyes and paints. Synthrapol has the unique property of keeping loose dye suspended during washing, thus preventing back-staining while aiding in the removal of excess color. Adding Synthrapol to a dye bath or fabric paint can increase dye penetration and helps ensure even coloring.