CI 77492 / IRON OXIDES.] ●
TL;DR. This ingredient is an inorganic colorant used to provide yellow tone, opacity, and shade adjustment in makeup, tinted skin care, sunscreens, and personal care products.
What does CI 77492 / IRON OXIDES.] do in a cosmetic formula?
This ingredient is an inorganic colorant used to provide yellow tone, opacity, and shade adjustment in makeup, tinted skin care, sunscreens, and personal care products.
Is CI 77492 / IRON OXIDES.] clean?
It is generally well-tolerated because it is insoluble and non-sensitizing in normal cosmetic use. Clean standards typically accept it when cosmetic-grade purity limits are met, especially for trace heavy metals.
Is CI 77492 / IRON OXIDES.] sustainable?
This material is mineral-derived or synthetically produced to consistent cosmetic purity, and it is not biodegradable because it is inorganic. It is environmentally persistent as a mineral particle, but it is also inert and used at relatively low levels compared with bulk formula materials.
Is CI 77492 / IRON OXIDES.] COSMOS-approved?
It is permitted under COSMOS-natural and COSMOS-organic products as an approved inorganic colorant, although it does not contribute organic content. From a Green Chemistry view, it scores well for stability, low reactivity, and low irritation, with weaker alignment on renewability and biodegradability.
How does CI 77492 / IRON OXIDES.] work chemically?
This compound is an insoluble hydrated metal-oxide pigment whose crystal form and particle size determine hue strength, opacity, and dispersibility. It is light-stable, heat-stable, and broadly pH-stable, often used below 1% for tint correction and at higher levels in color cosmetics when dispersed well in oils, esters, or powders.
Last updated 2026-05-13