C.I. 77491
What is C.I. 77491?
C.I. 77491 is the color index designation for red iron oxide, a synthetic inorganic pigment chemically known as ferric oxide (Fe2O3). Derived from naturally occurring iron ore but manufactured through high-temperature calcination for purity and particle size control suitable for cosmetics, it belongs to the iron oxides family approved for use in makeup products. Typically found in foundations, powders, lip colors, and eyeshadows, it functions as a colorant by absorbing and reflecting specific wavelengths of light to produce opaque red tones. Its fine particle size ensures smooth application and blendability, while its chemical stability resists fading from light exposure, heat, or pH changes in formulations, making it ideal for long-wear cosmetics.
Benefits
Delivers consistent red pigmentation for natural skin tones in makeup.
Offers excellent stability against light and oxidation for durable color.
Provides opaque coverage without bleeding into other formula components.
Who It's For
A quick guide for who this ingredient may suit (and who should be cautious).
| Who May Benefit | Who Should Avoid |
|---|---|
| Individuals seeking long-lasting, blendable color in daily makeup. | People with rare iron oxide contact sensitivities. |
| Those preferring mineral-based pigments in foundations or powders. | Those applying heavy layers on compromised skin barriers. |
| Users with normal to dry skin types using tinted skincare products. | Individuals preferring colorless or transparent formulations. |
Safety Notes
- Recognized as safe for cosmetic use by regulatory bodies like FDA and EU.
- Rated low hazard potential by environmental health assessments.
Frequently Asked Questions about C.I. 77491
What is C.I. 77491 used for in cosmetics?
It serves as a red colorant in products like foundations, blushes, and lipsticks for pigmentation.
Is C.I. 77491 safe for skin?
Regulatory reviews confirm its safety in cosmetics at typical use levels with low irritation potential.
Does C.I. 77491 stain the skin?
Its formulation ensures transfer-resistant color that rinses off easily with cleansers.