Through Thick & Skin: A Closer Look at the Skin and Its Functions
The skin has not one but many functions. It comes in different colors. You can cover it or show it off. Next to the brain, it’s the most complex organ of the body. Skin is made of a protein called Keratin. Hard keratin makes up our nails and hair while soft keratin makes up our skin. The epidermis is the only layer you can see and is essentially composed of keratinocytes (cells that produce keratin). Below, we lay out the six primary functions of the skin.