Monopolar RF with vacuum system for body contour,wrinkle removal,face lift,acne treatment;100kpa,0. ... , stimulate to excrete much new collagen to make up interspace of the shrinking or lost collagen protein, and make them rearray, rebuilt ... famous clinical doctors;2. Collagen renewal: the RF energy can reach the deep layers of skin, stimulating the collagen structure to renew. In response ...