What is the thin, clear layer of dead skin cells in the epidermis called?

The thin, clear layer of dead skin cells in the epidermis is known as the stratum lucidum. This layer is found primarily in areas of thick skin, such as the palms of the hands and the soles of the feet. The stratum lucidum provides an additional barrier and is made up of several layers of dead keratinocytes that are flattened and densely packed, contributing to the skin's protective functions.

Understanding the function of the stratum lucidum is crucial for estheticians, as it plays a role in the overall composition and health of the skin. This layer helps to reduce friction and shear forces in areas of high wear, allowing for better protection and resilience. In contrast, the other layers mentioned serve different roles in the skin's structure and function, such as the stratum granulosum, which aids in the waterproofing process, and the stratum germinativum, which is involved in the production of new skin cells. The term "invisible layer" is not a recognized term in skin anatomy and does not refer to a specific layer of the epidermis. Thus, the stratum lucidum is correctly identified as the layer in question due to its unique characteristics and location in the epidermis.