Pearlescent pigment is a kind of optical effect pigment, because it can show a certain metallic luster, so it is also called a non-metallic pigment with metallic luster. Pearlescent pigments have the glittering effect of metallic pigments, and can produce the soft color of natural pearls, when exposed to sunlight, can produce multi-level reflection, reflected light interaction to present a soft and dazzling or colorful luster and color.