Pearl pigments can be used for general purposes. They can be used in liquid, solvent and UV solidified printing ink series. Since pearl pigments have excellent dispersancy, they can be used separately or mixed with other pigments and then put into the printing ink, needing no mechanical treatment but slightly stirring to ensure that the surface of pearl pigment is not damaged. Do not use nontransparent materials and addictives that scatter light so as not to affect the effect of pearl pigments. Thus the use of pearl pigment will produce a strong sense of luster and gentleness to surface of presswork.