Ingredient review
Red Iron Oxide
INCI: CI 77015
A safe, natural mineral pigment that gives red and pink hues to makeup without common irritation.
In plain English
Red iron oxide is a naturally occurring mineral that is ground into a fine powder and used to color cosmetics. It's the same pigment that gives rust its reddish color, but in makeup it's purified and safe for skin. You'll find it in lipsticks, blushes, and foundations to create shades from soft pink to deep brick red. Unlike some synthetic dyes, it rarely causes irritation and is considered very gentle.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is relatively strong for its common cosmetic role.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- natural
- Evidence
- strong
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Red Iron Oxide is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Red Iron Oxide.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
strongThere is a stronger practical or research basis for the ingredient role described here.
What it is
A natural mineral pigment derived from iron oxide, specifically the red form (Fe₂O₃). It is mined, purified, and micronized for use in cosmetics.
How it works
It sits on the surface of the skin or lip, reflecting and absorbing light to create a visible color. It does not chemically react with skin; it simply provides a stable, non-bleeding tint that lasts through wear.
Pros
Gentle on sensitive skin
Red iron oxide is a mineral pigment that rarely causes irritation or allergic reactions, making it a safe choice for those with reactive skin.
Color stays true
Unlike some organic dyes, red iron oxide is very stable under light and heat, so your lipstick or blush won't change color over the day.
Cons and cautions
Can transfer to clothes
Because it's a powder pigment, it may transfer onto fabrics if not set with a powder or if the formula is not well-bound.
May feel powdery
In high concentrations or poorly milled formulas, it can leave a slightly dry or powdery feel on the skin.
Best for
- Anyone looking for a natural, gentle red pigment in makeup
- People with sensitive skin who react to synthetic dyes
Use caution if
- Those who prefer vegan alternatives to carmine (though iron oxide is vegan-friendly)
- People with very dry skin who may find powder pigments emphasize texture
Usage tips
Safety summary
Red iron oxide is one of the safest colorants used in cosmetics. It is non-toxic, non-irritating, and non-sensitizing. The FDA and EU consider it safe for use in all cosmetic products, including those for the eye area and lips.
Research notes
Multiple safety assessments by the Cosmetic Ingredient Review (CIR) panel and the FDA have concluded that iron oxides are safe for use in cosmetics. No significant health risks have been identified at typical use levels.
Common label clues
- Typical concentration
- 0.1% to 5% depending on desired shade intensity
- Regulatory status
- Approved as a color additive in cosmetics by the FDA (21 CFR 73.2250) and the EU CosIng database. No restrictions on concentration.
- Common uses
- Lipsticks, Blushes, Eyeshadows, Foundations, Tinted moisturizers
- Environmental note
- Mining of iron oxide can have environmental impacts, but it is a naturally abundant mineral. Some brands source from recycled or synthetic iron oxide to reduce mining.
Good to know
- Red iron oxide is often combined with yellow and black iron oxides to create a wide range of skin-tone shades in foundations.
- It is considered a 'clean' colorant by many natural beauty standards because it is mineral-based and not synthetic.
Common questions
What is Red Iron Oxide in beauty products?
Red iron oxide is a naturally occurring mineral that is ground into a fine powder and used to color cosmetics. It's the same pigment that gives rust its reddish color, but in makeup it's purified and safe for skin. You'll find it in lipsticks, blushes, and foundations to create shades from soft pink to deep brick red. Unlike some synthetic dyes, it rarely causes irritation and is considered very gentle.
What does Red Iron Oxide do in a beauty product?
It sits on the surface of the skin or lip, reflecting and absorbing light to create a visible color. It does not chemically react with skin; it simply provides a stable, non-bleeding tint that lasts through wear.
Is Red Iron Oxide safe for most people?
Red iron oxide is one of the safest colorants used in cosmetics. It is non-toxic, non-irritating, and non-sensitizing. The FDA and EU consider it safe for use in all cosmetic products, including those for the eye area and lips.
Who should be careful with Red Iron Oxide?
Those who prefer vegan alternatives to carmine (though iron oxide is vegan-friendly) People with very dry skin who may find powder pigments emphasize texture
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.