trans-epidermal water loss (TEWL)

Trans-epidermal water loss (TEWL) refers to the amount of water that naturally evaporates from the skin's surface into the environment. It represents the skin's ability to retain moisture and act as a barrier against external factors. When the skin's barrier is compromised, TEWL increases, leading to dryness, irritation, and potential skin conditions. Maintaining a healthy skin barrier helps regulate TEWL, keeping the skin properly moisturized and protected. Factors like damage, environmental conditions, and certain skin conditions can influence TEWL, affecting overall skin health.