As with all effect pigments, the use of polychromatic pigments requires an intensive examination of illumination and observation geometries, if useful and interesting color creations are to be produced.
Interference pigments are employed in many automotive and industrial paint formulations. Their high popularity is due to their fascinating interplay of color and to effects due to the various materials employed in their layered structures. Refractions and reflections of light at, and within, those layers cause interferences yielding selected colors.
