... mainly used to adjust impedance values of the tissue, guided RF ( RF ) energy deeply, adjusted focusing wave on different position ... collagen hyperplasia, rearrange, achieving the purpose of firming, wrinkle.Rf (radio frequency) energy absorption is not influenced by melanin, ... types of stain; ( 2): vascular lesions removal: red face, also known as red blood, dilatation capillaries, hereditary and ...