In partnership with the company Courage+Khazaka Electronic Gmbh, ProviSkin has developped its own probe for Transepidermal Water Loss (TEWL) measurement. The objective of the probe is to detect the transepidermal water flow (by evaporation) in order to measure the cutaneous barrier integrity. 

The value of the TEWL is calculated by dividing the water flow by unit of surface and time (g/m2h). This system enables not only to test the integrity of a membrane but also to indentifiy regenerative and altering effects of products and formulation on the cutaneous barrier.