The skin is composed of two tissues, an outer layer called the epidermis and an inner layer called the dermis or corium. The surface of the skin, or the epidermis, consists of dead cells, which are rubbed off as you move, wear clothes, and wash. This layer of dead cells is often referred to as "false" skin. Just below, in the dermis, the cells are very much alive. The cells of the dermis multiply every second to replace those worn away. The epidermis consists of four layers: the stratum basale, the stratum spinosum, the stratum granulosum, and the stratum corneum.
