(THIS IS AN ABBREVIATION OF THE BOOK CHAPTER)
The skin is a vital organ that covers the entire outside of the body, forming a gigantic protective barrier against pollution, pathogens and injuries. Some skin details are:
The color, thickness and texture of skin vary over the body and for everybody. There are two general types of skin; thin and hairy, which is more prevalent on the body, and thick and hairless, which is found on parts of the body that are used heavily and endure a large amount of friction, like the palms of the hands or the soles of the feet.
The epidermis is the outermost layer of the three layers of skin. Its thickness depends on where it is located on the body. For example, it’s thinnest on the eyelids (half a millimeter). It’s thickest on the palms of the hands and soles of the feet (1.5 millimeters).