Iron Oxides — Allergy Risk & Safety Profile

Name: Is Iron Oxides Safe? Allergy Risk & Alternatives
Creator: SkinDetekt

INCI: CI 77491, CI 77492, CI 77499

Also known as: CI 77491, CI 77492, CI 77499

✅ Low Risk

Key Facts

Category: colorant
Risk Level: low
Common Allergen: No
Found In: foundation, eyeshadow, concealer, blush

Is Iron Oxides safe in cosmetics?

Iron Oxides is rated low risk in cosmetic products. It is not classified as a common allergen and is generally well-tolerated by most skin types. Safer alternatives include Iron Oxides, Mica, Titanium Dioxide. Commonly found in foundation, eyeshadow, concealer.

What is Iron Oxides?

Mineral pigments. Red, yellow, and black oxides used in virtually all makeup. Very safe.

Allergy & Safety Information

Iron Oxides is considered safe for cosmetic use. No significant safety concerns have been identified at typical use concentrations. As with any cosmetic ingredient, discontinue use if irritation occurs.

This ingredient is considered low risk from an allergenicity perspective. Reactions are uncommon at typical cosmetic use concentrations. However, no ingredient is universally safe — if you notice redness, itching, or irritation after using a product containing this ingredient, discontinue use and monitor whether symptoms resolve.

About Colorant / Pigment Ingredients

Colorants are used in makeup and some skincare products to provide colour. Inorganic colorants (iron oxides, ultramarines, chromium oxides) and organic dyes (CI numbers) are regulated by cosmetic authorities for purity and safety. Iron oxides naturally contain trace metal impurities including nickel, which can cause reactions in nickel-sensitised individuals.

Relevance for Iron Oxides: Coal tar dyes (FD&C and D&C numbers) are more likely to cause reactions than inorganic mineral pigments. Azo dyes can release aromatic amines upon degradation. Metallic and shimmer pigments (mica, bismuth oxychloride) may contain trace nickel contamination.

How to Identify Iron Oxides in Products

Cosmetic ingredients are listed by their INCI (International Nomenclature of Cosmetic Ingredients) name in descending order of concentration. To check whether a product contains Iron Oxides, scan the ingredient list for its INCI name exactly as it appears above. Ingredients present at 1% or less may appear in any order after the 1% threshold.

Product types to prioritise checking: Foundation, Eyeshadow, Concealer, Blush. These product categories are the most common sources of Iron Oxides exposure based on formulation data.

Not sure if your products contain Iron Oxides? Paste the ingredient list into the free ingredient checker to scan for Iron Oxides and other allergens automatically.