murphyRed Iron Oxide (CI 77491)
AKA: Iron trioxide, Iron(3+) oxide, Anhydrous Ferric Oxide, Anhydrous Iron (III) Oxide
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Synthetic
Colorant
Not Clean
OriginRed iron oxide is derived from iron ore minerals, primarily hematite and magnetite, found in natural deposits worldwide. It is produced through heating and calcination of iron compounds, followed by grinding to create fine pigment particles.
Red Iron Oxide (CI 77491) is a cosmetic ingredient.
CAS #
1309-37-1, 1317-61-9, 1345-27-3, 52357-70-7, 1345-25-1
Form
Powder
State
Solid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Opacifying
Cosmetic Colorant
Gives the product its color. Purely aesthetic — makes the formula look good in the jar but does nothing for your skin.
Verified Jun 2026
Data: CosIng · EWG · CIR