The stratum lucidum is the layer of skin that is not always present. This layer is found only in thick skin, which is present on the palms of the hands and the soles of the feet. Thin skin, which covers most of the body, does not have a stratum lucidum.
The stratum lucidum is a clear, translucent layer that lies between the stratum granulosum and the stratum corneum. It is composed of dead cells that are packed with keratin, a tough protein that helps to protect the skin from abrasion. The stratum lucidum contributes to the toughness and resilience of thick skin.
Examples of where the stratum lucidum is present:
- Palms of hands
- Soles of feet
Examples of where the stratum lucidum is absent:
- Most of the body
