Golden Wetting Aid is a concentrated additive that reduces the surface tension of water in the acrylic emulsion, improving wetting and increasing the slickness and flow of acrylic paints. Adding Wetting Aid to water improves the absorption of acrylic colors into porous surfaces, allowing you to achieve rich stains on watercolor paper and unprimed canvas. Wetting Aid contains no binder and should only be used properly diluted, per product instructions.