The top layer of skin is called the epidermis. It's the outermost layer and serves as the first line of defense against external threats. The epidermis protects your body from harm, keeps it hydrated, produces new skin cells, and contains pigment that gives your skin its color.
The epidermis itself is made up of several layers, each with its own specific function. The innermost layer, called the basal layer, constantly produces new skin cells. These cells then move upward through the other layers, eventually becoming the tough, dead cells that make up the outermost layer of the epidermis, which is known as the stratum corneum.
The stratum corneum acts as a barrier to keep your body from drying out and to prevent harmful substances from entering. It is constantly being shed and replaced by new cells from the basal layer.
Here are some additional points about the epidermis:
- Protection: The epidermis protects against UV radiation, bacteria, and other harmful substances.
- Hydration: The epidermis helps to retain moisture, keeping your skin from drying out.
- Sensation: The epidermis contains nerve endings that allow you to feel touch, pain, temperature, and pressure.
- Pigmentation: The epidermis contains melanin, a pigment that gives your skin its color and helps to protect it from UV radiation.
