Which layer is considered the middle layer of the skin?

The dermis is recognized as the middle layer of the skin, situated between the outer epidermis and the inner hypodermis. This layer is crucial for skin structure and function, containing a rich supply of blood vessels, nerves, and connective tissue. It is where hair follicles, sweat glands, and sebaceous glands reside, playing essential roles in thermoregulation and providing moisture and lubrication to the skin. The dermis is further divided into two layers: the papillary dermis, which contains thin collagen fibers and is responsible for the skin's tactile properties, and the reticular dermis, which is thicker and provides strength and elasticity due to denser collagen fibers. Understanding the dermis's role and structure is vital for effective practices in dermatology and aesthetic treatments such as laser hair removal.