Cosmetics contain various iron oxide materials. There are both ordinary iron oxide inorganic pigments and special iron oxide materials in iron oxide pigments. What are they? Iron oxide red is the most familiar iron oxide pigment. Its use and properties must be well understood by users, but no one knows about special iron oxide except users. Iron oxide black is a kind of black iron oxide pigment. Its essence is different from iron oxide red. It belongs to the scope of ferric oxide. Iron oxide black is commonly used in magnetic inks. Iron oxide black is involved in the use of many magnetic inks.