Our skin is made up of 3 layers:
Subcutaneous – innermost layer of the skin; comprised of fat cells.
Dermis – middle layer of the skin; contains elastin & collagen fibers, nerve endings, and blood capillaries.
Epidermis – outermost layer of the skin; made up of cells in which their primary function is protection (both physically & chemically) against microorganisms, UV rays, pollutants, and injury.
An esthetician is primarily concerned with the health of the epidermis layer of the skin. When a client comes in for any type of facial, the epidermis is the layer of skin that is being manipulated.