Abstract: Liquid composition based on organic solvents to facilitate the adherence of coatings to substrates.A composition having the following ingredients provides excellent adherence characteristics to coatings applied to various substrates pretreated with the composition. The composition contains a mixture of organic solvents as follows:from 17 to 35% of xylenes,from 4 to 14% of ethylbenzene,from 55 to 75% of white spirit, and optionallyfrom 0.05 to 3% of an methylpolysiloxane modified by a polyether oil.The composition may be used on substrates like steel, iron, copper, brass, chrome, tin, aluminum, glass, earthenware, rubber, plastic and polyesters. It leads to improved adherence to such substrates of coatings like paint, varnish, glue and mastic as well as coatings applied by chrome-plating, galvanization and gold and silver plating.