What is the composition of your skin and what is it made of?

The skin is composed of three main layers: the epidermis, dermis, and hypodermis. The epidermis is the outermost layer and is primarily made up of cells called keratinocytes. The dermis is the middle layer and contains collagen and elastin fibers, as well as blood vessels and nerve endings. The hypodermis is the deepest layer and is made up of fat cells that provide insulation and cushioning.