A low foaming, anode-cathode etching inhibitor used in sulphuric or hydrochloric acid treatment solutions for low-carbon and high-carbon steels. It decreases the use and vaporizing of acid out of a bath, limits wear and hydrogenation of elements, increasing their resistance to secondary corrosion. Removes and emulsifies the residues of grease, oils, lubricants, polishing compounds and coolants. It increases the adhesion of electroplated coatings, paints and lacquers to activated surfaces. It guarantees high quality treated surfaces. Works perfectly with INWEXOL EMI and EM.