What it means
It is measured with an instrument held on the skin, and it is used as a marker of barrier function: higher TEWL usually means a weaker barrier.
Occlusives and humectants reduce water loss in different ways, and TEWL is often used in trials of moisturisers and eczema treatments.
Also known as
- TEWL
- trans-epidermal water loss
- skin water loss
Sources
General information, not medical advice. Talk to a clinician about any decision about your health.