Helios III certified by the US FDA, South Korea KFDA and the European Union has a dual-beam nanosecond flying spot 81 laser that strikes spots from shallow to deep, removes melanin, smooths large pores and fine lines. Using the principle of "selective photothermal therapy", the melanin in the skin is treated at a specific wavelength within one hundred millionths of a second. After the laser beam is absorbed by the melanin, the accumulated thermal effect instantly breaks the melanin into fine pigments The particles are absorbed, metabolized and discharged through the body's phagocytes. When the high-energy laser beam enters, the beam forms an optical mirror, which passes through the refractive optical body sheet to focus the beam into 81 points.