Take pearlescent pigments as an example, pearlescent pigments are a class of pigments with pearl luster, which are deposited on the substrate (generally natural mica, synthetic mica, glass sheet and other sheet-like materials) above a layer or alternately deposited multiple layers of metal oxides or non-metallic oxides and formed a flat sandwich body with a structure similar to sandwich. Due to the difference in refractive index between the substrate and the oxide deposited on its surface and each oxide, when the light shines on the surface of the pearlescent pigment, the incident light will be refracted and reflected at the interface of each layer of the pearlescent pigment, and the color of the pearlescent pigment that people see is the result of the superposition of light after multiple refractions and reflections of the light, that is, the interference phenomenon of light.

Another significant advantage of mica powder is its ability to work across a wide range of skin tones. The reflective properties of mica can be adjusted to create a variety of shades that complement different undertones, from cool to warm. Whether used in a champagne-toned highlighter for fair skin or a deeper gold or bronze illuminator for darker skin tones, mica powder can be formulated to enhance every complexion.