CI 77499

CI 77499, also known as iron oxide black or magnetite, is a naturally occurring iron oxide mineral (Fe₃O₄) used as a cosmetic colorant. It appears as a black powder and is one of several iron oxide pigments approved for use in skincare and cosmetic products. The ingredient functions purely as a colourant, imparting dark or black tones to formulations.In skincare products, CI 77499 is incorporated to add colour to serums, creams, masks and other preparations. As an inorganic mineral pigment, it remains on or near the skin surface rather than penetrating into deeper layers.

CI 77499 functions as a cosmetic colorant through light absorption. The iron oxide particles absorb visible light across the spectrum, appearing black or dark grey to the eye. The ingredient does not chemically react with skin or other formula components; instead, it remains dispersed within the product matrix.Because it is an inorganic mineral, it does not undergo enzymatic degradation or metabolism on the skin surface. Its primary role is visual rather than functional in terms of skincare efficacy.

CI 77499 is used during product formulation by manufacturers rather than by consumers as a standalone ingredient. If you are using a skincare product containing this colorant, no special application technique is required. Treat the product as you would any other formulation of the same type—apply evenly to clean skin and follow the brand's usage instructions. The colour itself has no bearing on how or when the product should be used.

CI 77499 is generally well-tolerated and approved for cosmetic use in concentrations typically found in skincare products. It is non-toxic and does not cause skin irritation in the vast majority of users. Those with confirmed sensitivities to iron oxides are rare but should exercise caution.