Measuring skin hydration to guide barrier care
We quantify surface hydration at set facial points using a corneometer-style probe and trend results alongside TEWL and sebum for the full barrier picture.
Live measurement (real example)
This portrait clip shows our hydration measurement in real time. We log probe readings, average results, and compare them to your baseline and seasonal trends.
Hydration units
Probe index value
Sites
Forehead • cheeks • chin
Δ%
Change vs baseline
How it works
After a brief acclimatisation, the probe estimates the dielectric constant of the stratum corneum—reflecting surface water. Multiple readings per site improve precision.
- Ambient temperature/humidity logged
- Avoid heavy creams immediately before session
- Average of multiple readings per site
What your reading means
Lower readings indicate dehydration; higher values reflect better water retention. We pair this with TEWL and sebum to choose humectants, emollients and routine cadence.
Notes: Measurements guide care and do not diagnose disease. Values depend on preparation, environment and device tolerances.