Our cosmetic pigments do not contain iron oxides. The difference is, iron oxides are not stable. They deteriorate rapidly when subjected to UV rays. Pigments containing Iron Oxide (aka inorganic) tend to discolor, commonly looking pink, mauve or orange over time. Our Non Iron Oxide pigments DO NOT contain Iron Oxide so the colors stay true for years. Our pigments are "MRI SAFE" because there is no iron oxide in our pigments to interfere with the Magnetic forces. Using our pigments your customers can have permanent makeup done today and have an MRI tomorrow safely without any burning. We have been selling gallons of our pigments Worldwide for 17 years and have never had any adverse reaction reported. 18 colors to choose from. Unlimited colors you can create. Every 18 color pigment kit comes with color mixing guide and an artist color wheel.