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.
Description. BIOSTEP is a unique collagen matrix dressing that allows you to overcome barriers to wound closure while maintaining an optimal moist wound environment. It targets and deactivates excess MMPs and has a 6-day wear time for prolonged control of the wound environment.