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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.

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mica powder makeup_mica powder makeup

While the mica industry presents significant economic opportunities, it also raises environmental and ethical concerns. The mining of mica can lead to habitat destruction, soil erosion, and water pollution, which have serious implications for local ecosystems and communities. Moreover, the mica supply chain has been linked to child labor and unsafe working conditions, particularly in some regions of India and Africa where mica is also sourced.


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mica powder makeup_mica powder makeup