This area is called the stratum germinativium . These cells eventually reach the surface. They are dead and scaly and leave the body as flakes. This area is called the stratum corneum . Keratin, a waterproof protein is found in the stratum corneum.
Keratin is extra thick on the soles of the feet and the palms of the hands.
The dermis is sometimes called the true skin, and is best developed in mammals. It is not composed entirely of cells but of connective tissue fibers extending in all directions. Dermis is made up of 2 layers. The outer papillary layer and the reticular layer . The epidermis and dermis are arranged in a mountain valley arrangement.