The emulsions are a class of dispersed systems consisting of two immiscible liquids. The protective active liquid can be an oil, a liquid hybrid resin or a reactive pre-polymer, while water is the second phase that acts as a dispersion medium. The polymers in aqueous dispersion they consist of a solid polymer which is synthesized dispersed in water, a polymerization medium. The water-based finishes have a generally neutral aesthetic effect and in some cases allow you to maintain the original appearance almost untreated wood. The water-based products therefore have a “ natural effect ” based not on the substance but often on the final aesthetic aspect.