Washing composition for indelible marks

A process which comprises (a) applying to a substrate in an imagewise pattern an ink composition comprising water, an acid or direct dye, a monovalent salt, a polyquaternary amine compound, and an optional nonionic or cationic surfactant, and (b) thereafter washing the substrate with a washing composition which comprises (i) a linear alkyl diphenyl oxide disulfonate compound, (ii) a salt selected from the group consisting of chloride salts, bromide salts, iodide salts, nitrate salts, acetylacetonate salts, polyphosphate salts, squarate salts, sulfonate salts, and mixtures thereof, and (iii) a cosolvent which is propylene glycol, dipropylene glycol, tripropylene glycol, diethylene glycol, glycerine, trimethylolethane, trimethylolpropane, or mixtures thereof.