Iron Oxide Yellow ●
TL;DR. This ingredient is an inorganic colorant used to give makeup, sunscreen, and skin-care products a warm it-beige tone and adjust shade balance. It provides opacity, tint strength, and light stability rather than a skin-care effect.
What does Iron Oxide Yellow do in a cosmetic formula?
This ingredient is an inorganic colorant used to give makeup, sunscreen, and skin-care products a warm it-beige tone and adjust shade balance. It provides opacity, tint strength, and light stability rather than a skin-care effect.
Is Iron Oxide Yellow clean?
From a clean-beauty perspective, it is broadly accepted, low-sensitization, and not a common restricted-list issue when cosmetic grade. The main quality focus is control of trace heavy metals under colorant purity specifications.
Is Iron Oxide Yellow sustainable?
It is mineral-derived or nature-identical and usually manufactured through controlled precipitation rather than sourced from a high-impact botanical supply chain. It is inorganic and not biodegradable in the organic sense, but it is stable, non-volatile, and not expected to bioaccumulate like persistent organic pollutants.
Is Iron Oxide Yellow COSMOS-approved?
It is permitted under COSMOS for natural and organic cosmetics when it meets cosmetic colorant purity rules and regional color-additive limits. Its Green Chemistry fit is acceptable but not perfect: processing is relatively solvent-light, while the material is not renewable or biodegradable in the usual carbon-based sense.
How does Iron Oxide Yellow work chemically?
The molecule is an insoluble mineral lattice built from metal cations, oxygen, and hydroxyl groups, which gives strong visible-light absorption and a matte, opaque finish. It is used as a dispersed powder rather than dissolved, from well under 1% for tint adjustment to double-digit levels in high-coverage color cosmetics, and it is highly stable to light, heat, and normal cosmetic pH ranges.
Last updated 2026-05-16