There is provided a method for debriding human tissue by dissolving a gas in a liquid to form a solution under elevated pressure to saturate that solution with the dissolved gas. The solution is depressurized at or towards ambient pressure for supersaturating the gas in solution. The method provides means for allowing supersaturated solution to infiltrate the human tissue needing to be debrided. The supersaturated dissolved gas solution is activated and the activated gas allowed to expand for releasing energy into the solution at or near the tissue needing to be debrided. That human tissue is exfoliated with released energy from the expanding activated gas.