Laser Technician IBEC Board Exam 2026 – 400 Free Practice Questions to Pass the Exam

The substance found in the stratum lucidum is eleidin. The stratum lucidum is a thin, translucent layer of skin found primarily in thick skin areas, such as the palms of the hands and the soles of the feet. Eleidin is a clear protein derived from keratin, and its presence gives the stratum lucidum its distinctive appearance.

Eleidin serves as a transitional product that contributes to the development of keratin, thereby providing a degree of protection to the underlying layers of the epidermis. This is particularly important in areas that experience higher friction and impact.

While keratin is indeed an important component of the skin and is prevalent in other layers of the epidermis, it is not specifically located in the stratum lucidum itself. Similarly, collagen is a structural protein found in the dermis and is not part of the epidermal layers. Melanin is the pigment responsible for skin color, and it is primarily found in the lower epidermal layers, particularly in the stratum basale.

Understanding the unique components of each skin layer enhances knowledge of skin structure and function, which is crucial for effective treatments in the field of laser technology and dermatology.