INCI name
CI 77491, CI 77492, CI 77499
Also listed as: Iron oxides, pigment red/yellow/black
Iron oxides are mineral pigments. CI 77491 is the red, CI 77492 the yellow and CI 77499 the black. Together they mix the browns and tans in foundation, concealer and contour products. They are also used in mascara and eyebrow products.
Cosmetic iron oxides are purified; they are not raw rust. They do not usually change much in colour once they are on the skin, which is why they are used where a stable shade matters.