According to the Cleveland Clinic, the skin of an average adult weighs about 6 pounds. Skin covers about 22 square feet of space and renews itself about every 27 days. It is the body's largest organ and plays a critical role in protecting the body from infections and the elements.
Three layers comprise the skin. The epidermis is the outer layer. It gives skin its color, and it regenerates its cells. The average person loses between 30,000 and 40,000 skin cells per hour, according to HowStuffWorks. The second layer is the dermis; this is where pain and touch receptors are located. The hypodermis layer is the innermost layer; it contains fat cells and sweat glands.