Abstract: A method for digitally printing on textile articles comprises a digital application of a dedicated diluent substance, according to the type of used coloring material (digital ink), thereby evenly distributing the volume and concentration of the dyeing substances, independently from the intensity of a desired color. An apparatus for carrying out the method uses a portion of a printing module, i.e. a printing head, not involved by the printing of the basic colors C-M-Y-K-, for injecting a specific diluent substance selectively integrating the printing, in which the color or dye, because of its low intensity, would be less than the amount necessary for achieving a passing of the coloring substances up to the opposite side of the fabric material to be printed upon.