TEWL is related to which primary function of the skin?

Transepidermal Water Loss (TEWL) is a crucial concept relating to the skin’s ability to retain moisture. It specifically refers to the process by which water evaporates through the epidermis and is a key aspect of the skin's barrier function. This process is fundamentally linked to the skin's capability to maintain hydration by minimizing excessive water loss.

The primary function associated with TEWL is secretion. This includes the secretions of various skin layers that facilitate barrier functions, including the production of lipids and natural moisturizing factors that help create a barrier against moisture loss. The skin secretes these substances to protect itself from environmental factors while also ensuring that it retains adequate moisture.

Understanding the role of TEWL underscores the importance of maintaining skin barrier function and hydration, which is vital for overall skin health. Maintaining proper moisture levels through appropriate skincare products can help in minimizing TEWL and enhancing the secretion of beneficial substances. Recognizing the interconnectedness of these functions is essential for those in the field of esthetics.