TEWL {aka transepidermal water loss} is a key sign of a damaged skin barrier. This happens when water passes from the dermis through the epidermis and evaporates through the skin barrier. Our Pharmacist Camille is here to show you how to prevent TEWL with EvercalmTM Overnight Recovery Balm. Lipid rich activated oils wrap skin in a hydrating blanket to minimise water loss while you sleep 😴