 Pheomelanins (or phaeomelanins) impart a range of yellowish to reddish colors.Pheomelanins are particularly concentrated in the lips, nipples, glans of the penis, and vagina.When a small amount of brown eumelanin in hair, which would otherwise cause blond hair, is mixed with red pheomelanin, the result is orange hair, which is typically called "red" or "ginger" hair.