The purpose of the present invention is to provide an ink composition for ink-jet printers which is for painting or drawing on cosmetic surfaces, etc. using an ink-jet printer and which is excellent in terms of the dispersibility and redispersibility of a pigment, etc. and consists only of components that are permitted to be incorporated into cosmetics. The present invention relates to an ink composition for ink-jet printers, characterized by containing at least one copolymer selected from between (a) an alkyl acrylate/diacetone acrylamide copolymer and (b) an acrylate/C1-18-alkyl acrylate/C1-8-alkylacrylamide copolymer.
