Only dermis is vascularized. Nutrients reach epidermis by diffusing through the tissue from the blood vessels. Underneath dermis is hypodermis (superficial fascia), also called subcutaneous tissue which is composed of loose connective tissue (mostly areolar and adipose).
A collagen dressing is a type of wound dressing that is made with a form of collagen to aid in the body's healing processes. Collagen is a category of structural proteins that are naturally present in almost every part of the human body and are especially common in connective tissue.
Collagen is a natural protein found in bone, cartilage, skin, and tendons; there are 27 different types of naturally occurring collagens in the body. Certain collagens found in skin tissue are essential for skin strength and elasticity.ollagen treatment involves one or more injections of collagen into a specific area. Some patients find the injections slightly uncomfortable; especially injections performed on the lips or around the nose. A topical anesthetic can be applied to the injection area to minimize pain.