One of the ways of skin rejuvenation is to use RF fractional, which in this technique is no longer use harmful light waves and replaces it with RF waves. In RF, the epidermis will not damaged and the temperature of the device affects only the deep part of the skin. . Fractional or Micronidling is one of the best and safest ways to rejuvenate the skin. With the stimulation of collagen , RF cause tightening of the skin. And they are another type of skin regeneration process.