CI 77861 (Tin Oxide)

CI 77861 is the Colour Index designation for tin oxide, an inorganic mineral powder used in cosmetic formulations primarily as a pigment adjunct and effect enhancer. Valued for its ability to boost brightness, opacity, and light-scattering, it is often incorporated to improve the payoff and visual impact of pearlescent and shimmer systems—frequently as a component or coating in effect pigments alongside materials such as mica and titanium dioxide. In color cosmetics, it helps create a refined, luminous finish, enhance sparkle definition, and support a smoother, more even-looking film on the skin. Highly stable and generally compatible across a wide pH range, CI 77861 is commonly found in eyeshadows, highlighters, blushes, lip products, and nail color, typically used at low to moderate levels depending on the desired sheen, coverage, and optical effect.