What Is Transepidermal Water Loss (TEWL)?
Proper hydration is crucial for healthy skin. As the name suggests, transepidermal water loss (TEWL) refers to the evaporation of water through the epidermis, or outer layer, of your skin. (TEWL is pronounced “TOOL” ) When TEWL is high, your skin becomes dry, itchy, and often irritated. People with atopic dermatitis (eczema), contact dermatitis, psoriasis, … Continue reading