Super-Heavy Duty Hand Cleaner - a specialized, solvent-based hand cleaner - features Astopon scrubbing agent and Eucornol emulsifying active. It is ideal for difficult-to-remove and deeply ingrained, oil-based contaminants. Isohexadecane is a specialized mild solvent that is a highly refined hydrocarbon solvent with low potential to irritate your skin. Optimized blend of surfactants creates a unique, mixed micellar cleaning system that penetrates, lifts and solubilizes a wide range of ingrained oil, grease, carbon black, water-based lubricants, lacquers and resins. It minimizes redeposition of soil residue. Astopon, produced from walnut shell powder, easily rinses away, helping prevent blocked drains and pipes. Highly concentrated, silicone-free formula uses ingredients in a thickened matrix, requiring only a small amount of product for effective, cost-efficient cleaning. 4-liter bottle is compatible with SC Johnson Professional Cleanse Heavy and Proline Curve Dispensers.