Used for concrete or other porous surfaces. Weather and UV light resistant - can be used on interior or exterior application. Requires a top coat, compatible with solvent and water based sealers. Mixes with distilled, deionized or reverse osmosis water in a 4:1 ratio. Stain adheres to a variety of surfaces including to interior/exterior concrete, brick, plaster and natural stone. Color can be varied by altering dilution rate. Check small area to ensure proper color. Applied with an airbrush, pump sprayer, sea sponge or traditional bristle brush. Can be sealed with epoxies, urethanes, solvent or water based sealers.