For a person with a Red/Pinkish undertone. Also corrects unwanted Red brows. Will not turn or heal a Red color.Rich Microblade Colors are specifically created with a thick and creamy iron oxide pigment which easily settles into the skin with long lasting results!According to Dr. Zwerling; pigments, like iron oxide, rarely cause allergic reactions. "Iron oxide has been shown to be the safest pigment," he says. "Anything that is vegetable based, organic, or natural is the most risky. It's the natural products in vegetables and herbs that can cause horrible allergic reactions."