This product is absolutely natural, it doesn't irritate the skin, it is soluble in water. It can be used to prolong the adhesive electrodes life: once they have lost their conductivity, spread the eco-conductive gel on the electrode's adhesive area before placing the it on the skin. To remove the residual gel from the skin, a wet cotton wad is enough. The eco-conductive gel must always be used while using the point detector.