A method for delivering liquid into the pores of a recipient human skin is provided. The method includes delivering via a nozzle, at least one stream of the liquid under pressure to the pores, the stream having a cross-section with a diameter no greater than about 50 μm, applying a negative pressure across an area of the skin being treated, rotating the nozzle relative to the area at a speed up to about 200 revolutions per minute, contacting an electrode connected to a first terminal of a power source, having a first electric charge, to the skin, and contacting a second terminal of the power source, having a second electric charge, opposite the first electric charge, to the liquid, thereby imparting direct electrical current (DC) between about 5 μA and 0.1 mA to the skin in the vicinity of the pores. The delivering, applying, rotating, and contacting occur simultaneously.
