no pigmentation, safe and fast, suitable for any kind of skin the optimal laser wavelength; 6.long laser pulse width(10ms to 800ms) has good penetration, effective penetration of hairfollicles. the 808nm wavelength laser directly reaches the black hair follicles in the dermis, and the hair removal effect is good. 808nm laser has high energy, the process of hair follicle endothermic necrosis is irreversible, and the hair removal effect is better. no glare, high safety factor: the 808nm laser is mainly invisible light, with low brightness, suitable for whole body use, good skin penetration, and not easy to damage the skin..syi