EFFECT PIGMENT AND USE THEREOF IN COSMETICS AND IN THE FOOD AND PHARMACEUTICAL INDUSTRIES
摘要
The invention relates to intensely colored and photostable effect pigments based on transparent undoped SiO<SUB>2</SUB> laminae. Said effect pigments are characterized in that the same are surrounded by an iron oxide layer having a thickness of 30 to 150 nm while all SiO<SUB>2</SUB> laminae have the same thickness ranging from 250 to 400 nm. Also disclosed is the use of the effect pigments in pigment mixtures, cosmetic formulations, and for coloring food and pharmaceutical products.
