Transepidermal water loss (TEWL, also known as perspiratio insensibilis) is a normal, constitutive loss of water vapour from the skin in the absence of sweat gland activity. However, as soon as the skin barrier function is slightly damaged, water loss increases. TEWL is therefore a measure of skin barrier function.
- Skin barrier effect / Skin barrier protection
- Film forming effect
- Protective effect
- Skin moisturization
- Soothing effect on chemically-induced skin irritation
- Protective effect after chemically-induced skin irritation
- Self-assessment (consumer test)