Ironoxides (Ci 77491 ●
TL;DR. This ingredient is a red inorganic colorant used to tint makeup, sunscreens, and personal care products. It provides opacity, shade adjustment, and color stability rather than skin-care activity.
What does Ironoxides (Ci 77491 do in a cosmetic formula?
This ingredient is a red inorganic colorant used to tint makeup, sunscreens, and personal care products. It provides opacity, shade adjustment, and color stability rather than skin-care activity.
Is Ironoxides (Ci 77491 clean?
From a clean-beauty perspective, it is generally well-tolerated and not a common sensitizer. The main quality point is compliance with cosmetic purity specifications for trace heavy metals.
Is Ironoxides (Ci 77491 sustainable?
This material is mineral-derived or synthetically produced from abundant inorganic feedstocks. It is not biodegradable because it is inorganic, but it is highly stable, inert, and not associated with meaningful bioaccumulation in cosmetic use.
Is Ironoxides (Ci 77491 COSMOS-approved?
It is permitted under COSMOS-natural and COSMOS-organic standards as an approved mineral colorant when it meets purity requirements. Its Green Chemistry fit is strongest on stability, low reactivity, and low use-level performance, while renewability is not relevant for an inorganic mineral pigment.
How does Ironoxides (Ci 77491 work chemically?
The molecule exists as an insoluble crystalline inorganic pigment with metal cations and oxygen arranged in a stable lattice, which gives it strong red color and high opacity. Typical use ranges from trace tinting levels below 1% to several percent in color cosmetics, and it is stable across normal cosmetic pH, heat, light, and oxidation conditions.
Last updated 2026-05-14