Iron Dioxide
AKA “Iron oxide (Fe2O4), Iron oxide (FeO2), Iron oxide (ACGIH), RefChem:791356, EINECS 215-570-8”
Mineral
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Ingredient Facts
Iron dioxide
AKA: Iron oxide (Fe2O4), Iron oxide (FeO2), Iron oxide (ACGIH), RefChem:791356, EINECS 215-570-8
Mineral · Colorant | Skin Conditioning · EWG: 5
Plant-Derived
Colorant
Skin Conditioner
Mineral
Clean
A natural mineral that adds subtle warmth and dimension to color cosmetics while providing a clean, mineral-based alternative to synthetic colorants.
Formula
FeO2
Mol. Weight
87.84
CAS #
12411-15-3
Form
Powder
Plant-Derived
Synthetic. Iron oxide is produced through synthetic chemical processes rather than mined from natural mineral sources. It is synthesized by oxidation of iron salts or through controlled thermal decomposition of iron compounds.
Function
Colorant | Skin Conditioning
Benefits
Provides scent
Traditional Use
Iron oxides have been used as colorants and pigments since ancient times in cosmetics, paints, and dyes. Historically mined and used in traditional cultures for body art and cosmetic pigmentation.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR