The concentrate is a liquid mixture of about 1000 parts by volume of ultra pure water having an electrical resistance of 16-26 megohms, total dissolved solids of less than 0.04 parts per million and a specific conductance of less than 0.10 microhmo to about 1.2 to 3 parts by volume of Willard Water as prepared in accordance with U.S. Pat. No. 3,893,943. The liquid concentrate is applied directly to a skin surface area having a burn or other dermal lesion to protect the area from bacterial contamination.