Two Distinct regions of the integumentary system: epidermis & dermis. Underneath dermis is hypodermis (superficial fascia), also called subcutaneous tissue which is composed of loose connective tissue (mostly areolar and adipose).
A collagen facial is a treatment designed to restore the depleted collage in your face and rejuvenate your skin. Ultimately, a collagen facial will slow down the aging process by replenishing your body's natural proteins through external applications.
Collagen is a major structural protein in the skin. It plays a key role in providing the structural scaffolding for cells, tissues, and organs. If it weren't for collagen, the body would literally fall apart.