the rf wave deeply penetrate skin tissue, heating it up and stimulating collagen and elastin production, refines facial and brightens the complexion radiofrequency (rf) therapy, also called radiofrequency skin tightening, is a nonsurgical method of tightening your skin. rf beauty machines are designed to reach the dermis (the deepest underlying layer of the skin) without penetrating or damaging the skin surface. radio frequency skin tightening (rf) is a safe, non-invasive, cosmetic procedure that uses rf energy to heat tissue and stimulate subdermal collagen this is a skin rejuvenation machine which adopts the latest innovative rf system to delivers radio frequency energy and transfer uniform heating effect.syi