Cosmetic Micas are one way of coloring your melt and pour or cold process soaps. And they surely can make your soap more beautifully vivid and bold. They can be stunning in clear products such as melt and pour soap because the light can refract off the mica particles. I am sorry to tell you that micas lose most of their shimmer in cold process soap because it is opaque.
Never heard of Mica? It is a natural product, cosmetic micas are coated with colorants such as pigments and FD&C colorants. What makes the shimmer and sheen of Micas? It is the dual sided colorants that makes that happen.
Do you want to learn more? In a recent posting from Modern Soapmaking called Using Cosmetic Micas in Cold Process Soap - Colorant Guide tells you all about how easy they are to use and there downfalls. Topics in this article include: Blending Micas to Create New Colors, Using Cosmetic Micas in Cold Process Soap Design Techniques, Mica Veins & Oil Swirls, Mica Dusting, Mica Painting, Mica on Soap Stamps and Examples of Using Cosmetic Micas in Cold Process Soap.