it penetrates, dissolves and removes grease, dust, dirt, carbon residues and from electrical equipment. The product is to be sprayed liberally and let dry by evaporation: you get perfectly degreased and dry parts. It evaporates without leaving any residues; it does not corrode, does not alter the conductivity. It restores the correct operating conditions. Inert on most plastics. To protect and adequately lubricate, use Multifunction Electric EM243. Do not use on live appliances.