👉 Dermis is a term used in medicine and dermatology to describe the outermost layer of skin, which covers about 50% of the body's surface. The dermis is composed of several types of cells, including keratinocytes (skin cells) that produce collagen, fibroblasts (proteins that make up the connective tissue), and melanocytes (cells responsible for producing melanin, a pigment found in the skin). The dermis also contains glands called sweat