A method for coloring hair, and a kit for coloring hair are provided. The method for coloring hair comprises applying to the hair a first composition comprising in a cosmetically acceptable carrier, one or more ionizable linkers of Formula I, or cosmetically acceptable salts thereof, or mixtures thereof:and applying to the hair a second composition comprising in a cosmetically acceptable carrier, one or more ingredients of Formula II and/or Formula III, or cosmetically acceptable salts thereof, or mixtures thereof:and wherein the first composition does not comprise any ingredients of Formula II and/or Formula III of the second composition and any oxidative dye precursors； wherein the second composition does not comprise any ionizable linkers of Formula I of the first composition； and wherein the second composition further comprises a dye composition and optionally a developer composition wherein the developer composition comprises one or more oxidizing agents； and wherein the dye composition comprises one or more oxidative dye precursors comprising one or more couplers and one or more primary intermediates.
