Hydration measurements of the stratum corneum: comparison between the capacitance method (digital version of the Corneometer CM 825®) and the impedance method (Skicon-200EX®)

Background

Measurement of stratum corneum (SC) hydration often involves the use of commercial instruments. The aim of this study was to compare and validate two recent instruments: the Corneometer 825® (digital probe) and the Skicon-200 EX®.



Methods

In vitro calibration was carried out on filter pads using different solvents, measurements over different layers of plastic foils, and evaluation of desorption kinetics. In vivo measurements were carried out on skin sites covering a range of very dry to well-hydrated skin areas.



Results

Conductance measurements are influenced by electrolytes while capacitance measurements are not. Dielectric constant of ...

Hydration measurements of the stratum corneum: comparison between the capacitance method (digital version of the Corneometer CM 825®) and the impedance method (Skicon-200EX®) is a post from: Skincare

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