4 in 1 Diode Laser is a high power diode laser platform, which equips with four wavelengths and larger spot size handle.It adopts Ultra Short Pulse and High Peak Power, delivering short pulses to destroy hair follicle with lightning fast speed. We have the absorption efficiency of the 808nm wavelength , the power energy of the 755nm,940 nm and the safety of the 1064nm wavelength. It releases four wavelength laser to target different depth of hair follicle. The benefit of 4 wavelengths are utilized for optimum coverage and penetration to reach a ultimate hair removal result. Excellent to arrive all hair depths and dark skins. With more superficial penetration, the 755nm wavelength targets the Bulge of the hair follicle and is especially effective for superficially embedded hair in areas such as the eyebrows and upper lip. Its deep penetration capabilities target the Bulge and Bulb of the hair follicle while moderate tissue depth penetration makes it ideal for treating the arms, legs, cheeks and beard. The 1064nm offers the deepest penetration of the hair follicle, allowing it to target the Bulb and Papilla, as well as treat deeply embedded hair in areas such as the scalp, arm pits and pubic areas.