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.
According to Dr. Victoria Negrete, board-certified dermatologist for Forefront Dermatology, âthere are three types of cosmetic procedures that are the most effective in reducing acne scars â microneedling, chemical peels and fractional resurfacing lasers.â Microneedling. Microneedling is also known as collagen induction therapy and is commonly used to improve tone and texture, surface scarring (such as acne scars) and treat fine wrinkles.