The epidermis is the outermost layer of your skin, providing a crucial barrier against infection and regulating water loss from your body. It's the layer you see and touch, and it's constantly regenerating itself. The epidermis is comprised of several layers, each with a distinct function:
- The stratum corneum, the outermost layer, is made up of dead cells and acts as a tough, protective barrier.
- The stratum lucidum, found only in thick skin, is a clear layer that helps to prevent water loss.
- The stratum granulosum, where cells begin to flatten and produce keratin, a tough protein that provides structural support.
- The stratum spinosum, where cells are connected by desmosomes and produce keratinocytes, which are responsible for skin pigmentation.
- The stratum basale, the innermost layer, is where new skin cells are produced.
The epidermis also contains melanocytes, cells that produce melanin, the pigment that gives skin its color and protects it from UV radiation.
The epidermis plays a vital role in protecting your body from the environment and keeping it healthy. It's constantly working to repair itself and maintain its barrier function.
