Gravimetric method for in vitro calibration of skin hydration measurements.
A novel method for in vitro calibration of skin hydration measurements is presented. The method combines gravimetric and electrical measurements and reveals an exponential dependency of measured electrical susceptance to absolute water content in the epidermal stratum corneum. The results also show that absorption of water into the stratum corneum exhibits three different phases with significant differences in absorption time constant. These phases probably correspond to bound, loosely bound, and bulk water.
Martinsen
Ørjan G
ØG
Department of Physics, University of Oslo, Blindern, Oslo NO-0316, Norway. ogm@fys.uio.no
Grimnes
Sverre
S
Nilsen
Jon K
JK
Tronstad
Christian
C
Jang
Wooyoung
W
Kim
Hongsig
H
Shin
Kunsoo
K
Naderi
Majid
M
Thielmann
Frank
F
D000328:Adult; D001834:Body Water / Q000378:metabolism*; D002138:Calibration; D004553:Electric Conductivity; D006801:Humans; D006813:Humidity; D008297:Male; D009664:Norway; D012869:Skin Absorption / Q000502:physiology*; D012882:Skin Tests / Q000379:methods* / Q000592:standards*; D014867:Water / Q000032:analysis*
D014867:Water