Skin Electrical Impedance Model for Evaluation of the Thickness and Water Content of the Stratum Corneum

Deterioration of the skin barrier function causes symptoms such as allergies because various chemical substances may enter human body. Quantitative evaluation thickness and water content stratum corneum is useful a measure in domains dermatology, nursing science, cosmetics development. The responsible for most function, two factors—the corneum—are thus important. In this paper, regarded parallel model resistance capacitance. From measurements electrical impedance skin, we propose new simultaneous estimation conventionally measured by confocal laser scanning microscope Raman spectrometer, respectively, discuss results measurements. was using device that developed. measurement began 3 seconds after electrodes on head came into contact with parameters including impedance, which obtained applying an alternating current signal at frequencies, were measured. We microscopy spectroscopy, respectively; investigated relationship skin; established potential estimating from correlation coefficients verification data 0.931 0.776, root-mean-squared error 2.3 µm, while surface 5.4 points. These findings indicate feasibility quantitative measuring impedance.