Red 6 Lake Average Colouring Agent/Pigment No known benefits Red 6 Lake at a glance Pigment used to add colour to makeup, food products, and skin care Ruled safe in its current use Also known as D&C Red 6 Aluminum Lake Red 6 Lake description Red 6 lake is a synthetic pigment used to add colour to makeup, as well as skin care and food products. The term lake refers to the process of transforming a pigment from a solid to a solution, usually using a metallic salt. This makes it insoluble in water. It is also known as D&C Red 6 Aluminum Lake, with the “D&C” designation meaning it is approved for use in drugs and cosmetics. The United States Food and Drug Administration has ruled Red 6 lake safe in its current use. Related ingredients: D&C Colors