LAUSR

Inorganic pigments used as colouring agents in cosmetics (especially foundations) have many advantages over organic pigments, such as better opacity, weather and chemical resistance and lower cost. However, the types used in cosmetics are very limited, with various kinds of red, yellow and black iron oxide along with white titanium dioxide being the main materials. Ultramarine blue (UB) as a blue pigment and chromium oxide as a green pigment are also sometimes used in cosmetics. In this study, we focus once again on UB and reexamine the possibility of expanding the colour gamut using UB instead of black pigment and creating other optical cosmetic effects.