One of the key points in obtaining quality concrete is the care and surface treatment of finished concrete. For them it is of vital importance the realization of a correct curing by means of water or healing agents to avoid losses of water by evapotranspiration that diminish their resistance. In cases where molds and formwork are used, it is necessary to apply release agents that prevent the concrete or mortar from sticking when the formwork is removed. It serves to prolong the life of the formwork material and significantly improve the final finishes. You can also apply surface retarders for concrete that, after brushing or washing, leave aggregate exposed on the surface, but firmly adhered to the concrete.