BRICKFORM Evaporation Retarder extends working time for coloring and stamping. Evaporation Retarder is formulated to be V.O.C. compliant. This water-based film minimizes the evaporation of water from the surface of newly placed concrete, extending both workability and finishing time. Evaporation Retarder comes in an odorless concentrate that is mixed with water, making it economical and environmentally friendly. Evaporation Retarder will not affect the final cure and concrete strength.