Consolidating water-based fixative for external use, formulated with a special resin having extremely small particles which give a high penetrating and consolidating power. Particularly suitable as a normalizing and consolidating primer for highly porous surfaces such as gypsum, old plaster, concrete, fiber cement, wood, etc…. It is also used as a normalizing primer for lime paints where it is required to standardize and reduce the absorption of the surface in order to avoid color differences, not natural and very obvious, that may occur on the lime-based finishing.