Iron Oxide Red CI 77491 (Red Iron Oxide)

Iron Oxide Red (CI 77491) is an inorganic mineral pigment widely used in cosmetic formulations to provide stable red-to-russet coloration and to build a broad range of warm skin-tone and color effects. Valued for its excellent lightfastness, chemical stability, and opacity, it delivers consistent color payoff and helps improve coverage and tone adjustment in both anhydrous and emulsion-based systems. As an insoluble pigment, it also contributes to optical soft-focus and a more even-looking finish by enhancing light-scattering when properly dispersed. Iron Oxide Red (CI 77491) is commonly found in foundations, concealers, powders, blushes, bronzers, eyeshadows, lip products, and sunscreens or tinted day creams, typically used at low to moderate levels depending on shade target, coverage, and desired undertone.