The fractional CO2 laser operates at 10600nm wavelength, which is selectively absorbed by water in skin tissue. This creates precise thermal effects where intracellular water instantly vaporizes within microseconds, forming microscopic treatment channels while preventing thermal damage to surrounding healthy tissue.
The laser beam splits into hundreds of microthermal zones (MTZs) measuring 100-200μm in diameter, covering only 15%-30% of the skin surface. This patterned treatment preserves intact skin as healing reservoirs, reducing recovery time to typically 3-7 days.
Customizable energy density, pulse duration, and treatment density allow tailored protocols for acne scars, photoaging, and dyschromia, achieving synergistic epidermal remodeling and dermal reconstruction.