keratinisation
Keratinisation, also known as cornification, is a biological process where cells fill with a tough, protective protein called keratin and eventually die. This process is a fundamental aspect of the development and function of the epidermis, the outermost layer of the skin in mammals, as well as the formation of structures like hair, nails, and feathers in other animals.
The process begins in the deepest layer of the epidermis, the stratum basale. Cells in this layer,
As the keratinocytes reach the stratum corneum, the outermost layer of the epidermis, they are essentially