“…For skin physiologists, this interface between the environment and the biological medium has several important function (barrier, mechanical, thermal, sensitive, etc) that, all together, justify the efforts undertaken during recent years by physicists and bioengineers in developing new techniques for measuring, in vivo, some physical properties of the skin (7). Various research laboratories have developed some few devices allowing measuring the electrical skin properties, all being based on the skin capacitance, conductance or impedance (5), with different kinds of electrodes, sensors and working by various measurement frequencies (3).…”