hair photon system 1.640,560,530,590nm,four filters 2.Permanent hair removal 3.Painless comfortable treatment 4.Good price ... to collagen production, which can make the skin more flexible and smooth and remove fine wrinkles. The light with long wavelength can ... , high temperature occurs to destroy follicles and hair shaft and prevent regrowth of new hair.2.Advantage:1.IPL can selectively target a ...