CI 77289

CI 77289 is a synthetic iron oxide pigment classified as a cosmetic colorant. It belongs to a family of inorganic mineral pigments commonly used across the cosmetics industry to impart colour and opacity to products. In skincare, it appears in formulations where colour is desired—typically in tinted moisturisers, foundations, concealers, and coloured powders.The ingredient itself is inert, meaning it does not undergo chemical reactions on the skin. It remains on the surface and does not penetrate the skin barrier. Its primary function is aesthetic rather than therapeutic.

CI 77289 works through light reflection and absorption. The pigment particles sit on the skin surface, scattering and absorbing light to create the appearance of more even skin tone and to provide coverage. Because it is inert, it does not interact with skin chemistry or trigger biological responses.

CI 77289 is used passively within products—simply apply the product as directed. There is no special technique required. If using a tinted product containing this pigment, apply evenly across the face for consistent colour. It can be used daily without concern, though individual tolerance to the overall formulation should always be considered.

CI 77289 is generally well-tolerated and approved for use in cosmetics across major regulatory bodies including the EU and the UK. It is non-comedogenic and non-irritating for the vast majority of users. Those with known sensitivities to iron oxides or mineral pigments should patch-test products containing this ingredient first.