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.

The decision to use natural mica powder over synthetic alternatives comes with multiple benefits. First and foremost, natural mica is generally safer for skin contact. Many synthetic pigments can cause allergic reactions or skin irritation. Furthermore, natural mica powder is free from harmful additives, making it suitable for individuals sensitive to certain ingredients in cosmetics.

In conclusion, mica plays a crucial role in various industries within China and offers a wealth of opportunities for economic growth. However, it is essential that the industry moves towards sustainable and ethical practices to address the environmental and social challenges that accompany mica mining. By fostering innovation and enforcing regulations, China can ensure that its mica industry not only thrives but does so in a manner that respects the planet and its people. This balanced approach will pave the way for a brighter future for the mica industry in China and its contributions to the global market.