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Iron Oxides

What Iron Oxides is & what it does

Mineral pigments in red, yellow, and black used to create natural skin-tone shades. In tinted sunscreens they also help protect against visible light linked to pigmentation.

What is Iron Oxides and what does it do in sunscreen?

Iron Oxides are mineral pigments in red, yellow, and black that are blended to create natural skin-tone shades. In tinted sunscreens they supply the color that helps the product blend in, and they also help protect against visible light, which is linked to pigmentation. They are colorants rather than UV filters, so they work alongside the sunscreen actives.

Is Iron Oxides safe?

Yes. Iron oxides are among the most established cosmetic colorants and are widely regarded as safe and non-sensitizing on skin. They are used in foundations, tinted moisturizers, and sunscreens around the world. As surface pigments they are well tolerated, including by sensitive skin.

Do Iron Oxides clog pores?

Generally no. Iron oxide pigments are inert minerals and are not considered comedogenic on their own. If a tinted product feels pore-clogging, the cause is more often the oils, waxes, or other carriers in the base. The pigments themselves are an unlikely trigger for breakouts.

What are Iron Oxides on an ingredient list (INCI)?

Iron Oxides is the grouped INCI name for the mineral pigments. On some labels they are listed individually by Color Index number: Ci 77491 (red), Ci 77492 (yellow), and Ci 77499 (black). These three are mixed in different ratios to build a range of skin-tone shades.

Do Iron Oxides protect against visible light?

Yes, to a degree. Iron oxides are pigments that help block visible light, which is one reason they appear in tinted sunscreens aimed at hyperpigmentation and melasma-prone skin. They are not a substitute for the UV filters that handle UVA and UVB. Think of them as a useful complement to the sunscreen actives, not a replacement.

Are Iron Oxides vegan?

Yes. The iron oxides used in cosmetics are synthetically produced mineral pigments rather than animal-derived, so they are typically considered vegan-friendly. Lab-made versions are standard because they offer better purity and more consistent color than mined ones.

Sunscreens with Iron Oxides

We rate 791 sunscreens that contain it, showing the top 10 by overall score:

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