The new developed RF-Excited CO2 fractional laser fires a laser beam through RF CO2 tube which is split into numbers of microscopic beam, producing tinier dot than general CO2 laser (glass tube). The treatment tip can vaporize the outmost layers of the skin across a large surface by creating thousands of tiny, microscopic laser wounds, spaced in an even pattern across the skin, but leaving areas of healthy, untreated skin between them, the lower collagen layer of the dermis is stimulated to renew and repair. Therefore, the heat of laser only passes deeply through the factional damaged area, the surface of skin now contains only microscopic surface wounds, in stead of a large, red, oozing burn. During the skin self-resurfacing, a great amount of collagen is produced for skin rejuvenation, after some recovery, the newly-generated skin is remarkably smoother, healthier and suppler