And traditional optical absorption of organic and inorganic pigments and optical reflection type metal pigments compared principle fineness pearl pigment is completely different, so the effect is unique. Pearlescent pigments are optically full three feet above the main representative of interference pigments, pearlescent pigments with different particle size in use to show different results. In general, the larger the particle, the flicker effect is stronger, but weaker against the background of hiding; on the contrary smaller the particle, the stronger of the background opacity, gloss softer. Walking wounded self-love rain changing the thickness of the metal oxide core, or the type of metal oxide, will bring the color change.