Laser Technician (International Board of Electrologist Certification) IBEC Board Exam

In which layer of the skin is eleidin found?

1. Stratum Corneum

2. Stratum Lucidum

3. Stratum Granulosum

4. Stratum Spinosum

The correct answer is: Stratum Lucidum

Eleidin is a clear, proteinaceous substance found in the stratum lucidum, which is the layer of the epidermis located between the stratum corneum and the stratum granulosum. The presence of eleidin is indicative of a transitional state of keratinocytes as they undergo the process of keratinization, leading to the formation of keratin in the uppermost layer of the skin. The stratum lucidum is particularly prominent in areas of thick skin, such as the palms of the hands and the soles of the feet, where it provides an additional barrier for protection. This layer is characterized by its translucent appearance, and the presence of eleidin contributes to the overall clarity and functionality of the skin in these areas. Understanding the role of eleidin in the stratum lucidum is important for recognizing how the skin adapts and protects itself in response to environmental factors and physical stress.