Iron Oxides: What It Is and Why It's Used

Origin

Iron oxide pigments are among the oldest colorants known. Ochres, umbers, and siennas — iron oxide minerals — have been used in cave paintings, body decoration, and early cosmetics for tens of thousands of years. The synthetic production of iron oxide pigments began in the early 20th century, offering more consistent colour, purity, and safety than mined equivalents.

Why It's Used

Synthetic iron oxides provide yellow, red, and black shades (and brown by mixing) without the heavy-metal contamination risks associated with some mineral sources. They are opaque, stable across pH and temperature ranges, and non-reactive with most cosmetic ingredients. The synthetic grades used in cosmetics are manufactured to strict purity specifications under EU Regulation 1223/2009.

Elsewhere

Iron oxide pigments are used extensively in architectural paints and coatings, concrete colourants, plastics, and paper. They are also used in magnetic recording media and, in finely ground form, as magnetic particles in medical imaging.

What the Framework Sees

Questions 1 and 5, and a direct contrast with the flagship profile.

Get the full analysis in Volume Two →