CI 77489

CI 77489 is a synthetic iron oxide pigment, also known as iron oxide brown or ferric oxide. It is a naturally occurring mineral compound that has been refined for cosmetic use and is approved for use in colour cosmetics across most regulatory bodies, including the EU and UK.In skincare formulations, CI 77489 serves as a cosmetic colorant to tint products — including foundations, bronzers, concealers, and pigmented serums. It is insoluble in water and stable under normal storage conditions, making it a reliable choice for achieving consistent colour in finished products.

CI 77489 functions as an inert pigment, meaning it imparts colour through light absorption and reflection rather than through chemical interaction with the skin. Once applied, iron oxide particles sit on or near the skin surface, absorbing and scattering light wavelengths to create the desired visual tone.Because it is insoluble, it does not dissolve into the skin or enter the bloodstream; instead, it remains as a coating that can be washed away with cleansing.

CI 77489 is pre-formulated into products by manufacturers and does not require adjustments in daily use. Simply apply the finished product as directed. If you are using a pigmented skincare formulation containing this ingredient, ensure you cleanse thoroughly to remove all product residue at the end of the day, particularly if layering with other products.

CI 77489 is generally well-tolerated and considered safe for topical cosmetic use. It is non-comedogenic and unlikely to cause irritation in most people, though those with very sensitive skin or known sensitivities to iron oxides should patch-test first.