New York Nail Technician License Practice Test

The "true skin" is referred to as the dermis because it comprises the thicker layer of skin beneath the epidermis, which is the outer protective layer. The dermis is vital for supporting and nourishing the epidermis and contains important structures such as blood vessels, hair follicles, sweat glands, and connective tissue. It plays a critical role in skin elasticity and strength, largely due to the collagen and elastin fibers present in its structure.

In contrast, the epidermis is primarily responsible for the skin's barrier function and does not contain blood vessels or sensory receptors as extensively as the dermis. The hypodermis, or subcutaneous layer, is actually the layer beneath the dermis and serves more as insulation and energy storage rather than a direct component of the skin itself, which is why it is not considered "true skin." Understanding these layers helps nail technicians comprehend the structure and function of skin, which is essential for providing effective nail care and ensuring overall skin health.