Water evaporation through the Epidermis is known as Transepidermal water loss and is used to characterize Skin barrier function. TEWL is a process that the Skin naturally regulates however, certain factors that can damage the Skin barrier function can also affect TEWL levels negatively. Injury, low humidity weather conditions and topically applied products that dry out the Skin can compromise TEWL.
TEWL
