1. Protects our bodies.
2. Helps keep our bodies at just the right temperature.
3. Allows us to have the sense of touch.
Structure of Skin
The skin is made up of three layers, each layer with its own important parts. The layer on the outside is called the Epidermis. The epidermis is the part of your skin you can see.
Look down at your hands for a minute. Even though you can't see anything happening, your epidermis is hard at work. At the bottom of the epidermis, new skin cells are forming. When the cells are ready, they start moving toward the top of your epidermis. This trip takes about 2 weeks to a month. As newer cells continue to move up, older cells near the top die and rise to the surface of your skin. What you see on your hands (and everywhere else on your body) are really dead skin cells