RED 21 LAKE [CI 45380 / RED 21 LAKE]
Red 21 lake is a pinkish red pigment often used in waxy cosmetic products, such as lipsticks, to give a lovely red colour. The pigment can be made by precipitating the pigment Red 21 with aluminium salts rendering it insoluble in water to prevent leaking of colour in the final product. The treatment also ensures an even spread of pigment in a product. The pigment is then lightened by adding some white titanium dioxide pigment.