MelaninMelanin is a naturally produced polymer found in a multitude of locations in the body, from the eye and ear, to the brain and skin. Click here for more information. is a naturally produced polymer found in a multitude of locations in the body, from the eye and ear, to the brain and skin. The pages below outline the importance of melaninMelanin is a naturally produced polymer found in a multitude of locations in the body, from the eye and ear, to the brain and skin. Click here for more information. as a skin pigment in humans as well as melaninMelanin is a naturally produced polymer found in a multitude of locations in the body, from the eye and ear, to the brain and skin. Click here for more information. in wider biology.