a conductive composition for a biological electrode is capable of reducing the impedance between the electrode and the skin . a conductive gel composition for a biological electrode which is capable of electrically and physically connecting a living body to an electrode element and is composed of at least the following components : a radical - polymerizable unsaturated compound ; a moisturizer serving as a plasticizer and functioning to supplementing and promoting the physiological humidifying function of the horny layer ; a polymerization initiator ; and a crosslinking agent . this moisturizer serves also as a plasticizer and , furthermore , elevates the moisture content in the horny layer at the application of this composition . the above - mentioned composition may further contain a plasticizer selected from among polyhydric alcohols , amines and ethers .