Mica powder is a naturally occurring mineral that is mined from the earth. It is composed of small, flat flakes that are transparent or translucent and have a pearly luster. Mica powder is often used in a variety of applications, including cosmetics, personal care products, and crafts, to add shimmer and shine to products.

Pearl pigment, on the other hand, is a type of effect pigment that is made by coating mica flakes with various metal oxides, such as titanium dioxide or iron oxide. This coating gives the mica flakes a more intense, pearlescent effect than natural mica powder. Pearl pigment is often used in the same types of applications as mica powder, but it has a more distinctive, reflective quality.

The key difference between mica powder and pearl pigment is that pearl pigment is a modified version of mica powder. The addition of metal oxides changes the physical and optical properties of the mica flakes, resulting in a more intense and reflective pearlescent effect. Pearl pigment is often used in applications where a more striking, eye-catching effect is desired.

So you can simply understand and remember this 2 kind of Pigment.

Pearl pigment = Modified version of mica powder