Yellow Iron Oxide Ci77491 ●
TL;DR. This ingredient is a mineral colorant used to give warm earthy tint, opacity, and shade correction in makeup, tinted sunscreen, and complexion products.
What does Yellow Iron Oxide Ci77491 do in a cosmetic formula?
This ingredient is a mineral colorant used to give warm earthy tint, opacity, and shade correction in makeup, tinted sunscreen, and complexion products.
Is Yellow Iron Oxide Ci77491 clean?
This ingredient is broadly accepted in clean-beauty standards as a low-sensitization colorant when cosmetic-grade purity specifications are met. The main watchpoint is trace heavy-metal content, which is tightly limited for regulated color additives.
Is Yellow Iron Oxide Ci77491 sustainable?
This material is mineral-derived or made synthetically to match a mineral, so it is not renewable and does not biodegrade in the way plant-based organics do. It is inert and not expected to bioaccumulate, with the bigger sustainability issues coming from mining, purification, and energy use.
Is Yellow Iron Oxide Ci77491 COSMOS-approved?
It is permitted under COSMOS-natural and COSMOS-organic standards as an allowed inorganic colorant when it meets purity requirements, but it does not count as organic content. From a Green Chemistry lens, it scores well for stability and low biological reactivity, with caveats around nonrenewable mineral feedstocks and processing energy.
How does Yellow Iron Oxide Ci77491 work chemically?
This is not a molecular active but an insoluble inorganic pigment made of crystalline particles, which provide opacity and tint by light absorption and scattering. Use levels range from trace tinting amounts below 1% to high single-digit or higher levels in color cosmetics, and it is stable across typical cosmetic pH, heat, and light conditions.
Last updated 2026-05-16