Iron oxides are inorganic mineral pigments (red, yellow, black, and their blends) used to impart color in cosmetics and to provide visible-light protection in tinted sunscreens. They are widely regarded as safe and non-reactive for topical use.
| Reported effect | How often | Notes |
|---|---|---|
Allergic contact dermatitis | Rare | Sensitization to iron oxides is uncommon; most reactions are attributed to other formulation components. |
Skin irritation | Rare | Generally well tolerated; mild irritation occasionally reported, often linked to other ingredients. |
Pigment staining of skin | Uncommon | Highly pigmented products may temporarily tint the skin but wash off readily. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.