... of natural leather brighter, hydrolyzes dipeptides nutrition protectant and water film-forming agent. It is un-releasing treatment agent, ... to treat organic and inorganic matrix, whose suitable solvent are water, ethanol, ketones, ketones, esters, hydrocarbons and chlorinated hydrocarbons. ... or sponge to wipe the leather surface, which can remove water by-product methanol. Prior to use, you must first ...