TEGO Twin 4100 is a highly active, widely applicable substrate wetting additive which does not stabilize foam. It is a siloxane-based gemini surfactant. TEGO Twin 4100 provides excellent anti-crater effect and flow promotion properties. It is suitable for all types of application and substrate wetting. TEGO Twin 4100 helps improve substrate wetting and leveling of coatings, provides anti-cratering properties which results in smooth film formation and avoids defects. It is clear to slightly hazy liquid with 100% active matter content and has high storage stability. TEGO Twin 4100 is suitable for waterborne and solventborne systems.