... of oxygen molecule participating with photosensitive reaction of biological. In the course of this approach, irradiation on certain ... ; Simultaneously, it may stimulate the fiber cell, synthesis new collagen, elastin, wrinkle removal, scar, etc.Function: To Shrink pores; ... is effectively matched with light absorption peak of Propionibacteriaeae in acne, could be permeated into 0.25mm under skin ...