What are the two sub-layers of the dermis called?

The dermis, which is the second layer of the skin located underneath the epidermis, is divided into two distinct sub-layers: the papillary dermis and the reticular dermis.

The papillary layer is the uppermost part of the dermis and is characterized by its loose connective tissue, which contains thin collagen and elastin fibers. This layer is responsible for the formation of fingerprints and provides nutrients to the epidermis through its rich supply of blood vessels. It also houses various sensory receptors.

The reticular layer, on the other hand, is the thicker portion of the dermis, made up of dense irregular connective tissue. This layer contains larger collagen bundles and provides strength and elasticity to the skin. It is where most of the dermal structures, such as hair follicles, sebaceous glands, and sweat glands are located.

Understanding the structure and function of these two sub-layers is crucial for various skin treatments, including electrolysis, as they help inform practitioners about where the hair follicles are located and how to effectively target them.