<p>A stain remover which comprises a copolymer made from as essential ingredients (a) a polymerizable monomer having a polyfluoroalkyl group with less than 8 carbon atoms and represented by the general formula H2C=CXCOO-Y-Rf and (b) a fluorine-free polymerizable monomer represented by the following general formula. H2C=CXCOO-(RO)n-X The stain remover is effective in minimizing the amount of an organic solvent to be used. It imparts to a substrate the excellent property of removing stains therefrom and a satisfactory texture.</p>
