77491
77491
774
9/10
Concern level
High concern
CI 77491 is the cosmetic color index designation for red iron oxide, a mineral pigment used to impart red to reddish-brown color in makeup and skin care formulations. It is an inorganic, insoluble pigment with high opacity, strong stability, and broad compatibility across product types.
Pore-clogging
Non-comedogenic
Pregnancy
Safe
Regulatory
No data
Chemical Properties
Molecular Weight
159.69 g/molTypical Concentration
0.10% - 25.00%CAS Number: 1309-37-1
Skin Type Compatibility
dry skin10/10
oily skin10/10
sensitive skin10/10
acne prone10/10
mature skin10/10
normal skin10/10
Interactions
incompatible with:
Risks & Warnings
Generally low risk. Potential issues are rare but may include contamination concerns if poorly manufactured, and very occasional irritation in sensitive users. As a pigment, it does not pose the typical sensitization or comedogenic risks associated with oils or botanicals.
Vegan Cruelty-Free
