Table 4 Human skin attachment test of the conventional and present porous PDMS layer.

From: Wearable porous PDMS layer of high moisture permeability for skin trouble reduction

  Conventional non-porous PDMS layer Present porous PDMS layer (te = 150 °C and WMR = 0.5)
Skin redness
Redness level* (Redness level of surround skin) 8 ± 2.8 (21 ± 4.0) 20 ± 3 (22 ± 4.1)
Skin redness index** 2.6 1.1
Itchiness level*** 3 0
Medical diagnosis (reason) Irritant contact dermatitis (low water vapor permeability) N/A
  1. *Redness level is measured on 6 spots of each specimen with HSL color code (0: red, 25: yellow).
  2. **Skin redness index = Redness level of the specimen attached skin / Redness level of surround skin.
  3. ***Itchiness level survey (0: normal state, 6: mosquito biting.
  4. All results are measured followed by 7 days of the specimens attachment on 1 subject.