A method for delivering liquid into the pores of recipient human skin is provided. The method comprises 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 an electrical current between about 0.2 mA and 0.3 mA to the skin in the vicinity of the pores. The delivering, applying, rotating, and contactings occur simultaneously.
