The outermost layer of the skin is called the epidermis. It serves as a protective barrier against external threats, helps maintain hydration, generates new skin cells, and contains melanin which determines skin color.
The epidermis is made up of several layers, with the stratum corneum being the outermost layer. This layer is composed of dead keratinocytes, which are constantly shed.
The epidermis is vital for maintaining the health and integrity of the skin. It is responsible for various functions, including:
- Protection: It acts as a barrier against harmful substances, microorganisms, and UV radiation.
- Hydration: It helps retain moisture and prevents dehydration.
- Sensation: It contains sensory receptors that allow us to feel touch, temperature, and pain.
- Pigmentation: It produces melanin, which gives skin its color and protects against UV damage.
- Cell renewal: It constantly produces new skin cells to replace those that are shed.
