1With a wavelength of 520200nm, it can effectively filter harmful light and retain the effect without hurting the skin. 28 grades are available to meet different needs. 3Rapid treatment: Large application area (4.5 square centimeters) and rapid flash. 4Painless: Ideal for full body hair removal, including face, arms, underarms, bikini line, legs, back, etc. 5Adopts advanced IPL technology, inhibit melanin and hair regeneration.