... of collagen, and that is why when laser/IPL/RF treat to a certain period, even if increase the ... sun-damaged skin2,Cure acne, acne mark, folliculitis 3,Reduce the erythema and telangiectasia.4,Smooth and diminish fine ... lines and wrinkles,tighten sunken or saggy skin5,Reduce pore size,improve rough dry skin6,Improve adverse metabolic ... itself, recover after surgery. Skin Care PDT beauty machine