... the skin, to better protect the skin, hair follicle melanin by specific wavelength of laser absorption, ... can be shot down into the hair follicles within the hair follicle is destroyed energy decomposition, so ... : no pigmentation, suitable to all types of hair color and high efficiency4. Long laser width: Effective ... Efficiency: 808 nm is in the spectrum of near-infrared (0.75 ~ 1.50 μm) region, effective ...