Masterkure® 220WB— is an additional means to protect against evaporation of water from fresh concrete or with concrete surface. MasterKure 220WB is suitable as liquid means for care of concrete with the purpose of improving the quality characteristics of structures and concrete products. After applying the product MasterKure 220WB a protective film is formed that prevents water evaporation during concrete hardening. This minimizes the formation of cracks from drying shrinkage. In the same time the resulting film is vapor-permeable and may be covered with a layer of another material.