Abstract: An improved apparatus for tissue cooling during laser-based procedures is provided, which utilizes a combination of chilled pressurized air and atomized water to rapidly lower tissue surface temperatures. The apparatus includes a continuous-operating delivery system for chilled pressurized air and a volume-controlled device for water, allowing the air-to-water ratio to be precisely adjusted to prevent excessive moisture accumulation on the tissue. The water-air mixture formed within a chilled mixing chamber is discharged through a single-outlet nozzle as a fine mist spray, which is directed at the laser-irradiated tissue to enhance cooling efficiency.