Mica is one of the most widely used effect pigments in modern cosmetics — loved for its ability to create glow, shimmer, luminosity, and dimension within a formula. Unlike pigments designed for strong opacity or bold colour payoff, mica works by reflecting light, giving products their radiant, light-catching finish.

This guide explores what mica is, how cosmetic mica is made, and how it behaves inside formulations. From glosses and highlighters to eyeshadows and shimmer body products, understanding mica is essential for anyone looking to create luminous, modern beauty products with depth and visual glow.