- The dermis is located underneath the epidermis, supporting it with nutrients and oxygen.
- Dermis consists of blood vessels, sweat glands, hair follicles, sebaceous glands, collagen and elastin fibers, nerves.
- Collagen give skin strength, elastin give skin elasticity. These fibers get damaged with aging, making skin appear loose, thin, and wrinkled.
- There is data to support oral consumption of collagen may have a beneficial effect on skin physiology:
- Sebaceous glands are found all over the body except for palms, soles, and tops of feet.
- The largest concentration of sebaceous glands are in the face and scalp.
- Sebaceous glands are the sites of origin for acne and other skin disorders.
- Sebaceous glands produce sebum, which are oils consisting of triglycerides and fatty acid breakdown products, wax esters, squalene, cholesterol, and cholesterol esters.
- Sebum gets to the skin surface through pores, lubricating it a protective layer to prevent water loss, and contains antioxidant, antibacterial, and inflammatory properties.
- Nerve endings are located in the dermis, and this is where we actually feel touch, pressure, pain, and temperature.
Hypodermis (Subcutaneous layer)
The primary function of this fatty layer are to:
- Protect the organs
- Provide protection against the cold
- Energy storage