sarveiskerroksessa

Sarveiskerroksessa, often translated as the stratum corneum, refers to the outermost layer of the epidermis. This layer is composed of flattened, dead keratinocytes, also known as corneocytes, which are filled with keratin. The corneocytes are arranged in a dense, tightly packed structure, providing a vital protective barrier for the skin.

The primary function of the stratum corneum is to act as a physical and chemical shield. It prevents the entry of pathogens, allergens, and other harmful substances into the body. Additionally, it plays a crucial role in regulating water loss from the skin, thereby maintaining hydration and preventing dehydration. This barrier function is essential for overall health and well-being.

The stratum corneum is constantly renewing itself through a process called desquamation, where old, dead cells are shed and replaced by new cells migrating from deeper layers of the epidermis. This continuous turnover ensures the integrity and effectiveness of the skin's protective barrier. Factors such as environmental conditions, skincare practices, and underlying health can influence the condition and function of the stratum corneum.